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An out-of-bounds (OOB) memory access flaw was found in the Linux kernel's eBPF due to an Improper Input Validation. This flaw allows a local attacker with a special privilege to crash the system or leak internal information.
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回合社区补丁：
测试结果：
#./test_progs -t d_path
#27/1 basic:OK
#27/2 check_rdonly_mem:OK
#27/3 check_alloc_mem:OK
#27 d_path:OK
Summary: 1/3 PASSED, 0 SKIPPED, 0 FAILED
#./test_verifier
...
#1185/p XDP pkt read, pkt_data <= pkt_meta', good access OK
#1186/p XDP pkt read, pkt_data <= pkt_meta', corner case -1, bad access OK
#1187/p XDP pkt read, pkt_data <= pkt_meta', bad access 2 OK
#1188/p XDP pkt read, pkt_data <= pkt_meta', corner case, good access OK
#1189/p XDP pkt read, pkt_data <= pkt_meta', corner case +1, good access OK
Summary: 1732 PASSED, 0 SKIPPED, 0 FAILED
#./test_verifier | grep ring
#840/u ringbuf: invalid reservation offset 1 OK
#840/p ringbuf: invalid reservation offset 1 OK
#841/u ringbuf: invalid reservation offset 2 OK
#841/p ringbuf: invalid reservation offset 2 OK
#842/p ringbuf: check passing rb mem to helpers OK
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