In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis asafe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with aBDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthisa safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain witha BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis asafe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with aBDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthisa safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain witha BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis asafe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with aBDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthisa safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain witha BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis asafe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with aBDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthisa safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain witha BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis asafe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with aBDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthisa safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain witha BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis asafe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with aBDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthisa safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain witha BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis asafe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with aBDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthisa safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain witha BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis asafe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with aBDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthisa safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain witha BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis asafe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with aBDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthisa safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain witha BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis asafe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with aBDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthisa safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain witha BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis asafe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with aBDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthisa safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain witha BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis asafe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with aBDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthisa safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain witha BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis asafe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with aBDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthisa safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain witha BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis asafe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with aBDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthisa safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain witha BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis asafe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with aBDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthisa safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain witha BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis asafe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with aBDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthisa safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain witha BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis asafe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with aBDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthisa safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain witha BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis asafe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with aBDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthisa safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain witha BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis asafe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with aBDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthisa safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain witha BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis asafe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with aBDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthisa safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain witha BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis asafe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with aBDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthisa safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain witha BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis asafe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with aBDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthisa safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain witha BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long,but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() insteadof div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that shouldhappenimplicitly.This would bedifficult to exploit in memcg domain, given theratio-basedarithmetic domain_drity_limits()uses, but is much easier in globalwriteback domain witha BDI_CAP_STRICTLIMIT-backing device,using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
IntheLinuxkernel,thefollowingvulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument todiv_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used inthe isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult toexploit in memcg domain, giventhe ratio-basedarithmetic domain_drity_limits()uses, but is much easier in globalwritebackdomain with a BDI_CAP_STRICTLIMIT-backing device, usinge.g. vm.dirty_bytes=(1<<32)*PAGE_SIZEso that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis asafe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with aBDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthisa safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain witha BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis asafe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with aBDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthisa safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain witha BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis asafe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with aBDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthisa safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain witha BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis asafe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with aBDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthisa safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain witha BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
| linux | | https://git.kernel.org/linus/9319b647902cbd5cc884ac08a8a6d54ce111fc78 | https://git.kernel.org/linus/f6789593d5cea42a4ecb1cbeab6a23ade5ebbba7 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again(struct dirty_throttle_control *)->thresh is an unsigned long, but ispassed as the u32 divisor argument to div_u64(). On architectures whereunsigned long is 64 bytes, the argument will be implicitly truncated.Use div64_u64() instead of div_u64() so that the value used in the isthis a safe division check is the same as the divisor.Also, remove redundant cast of the numerator to u64, as that should happenimplicitly.This would be difficult to exploit in memcg domain, given the ratio-basedarithmetic domain_drity_limits() uses, but is much easier in globalwriteback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)
