CVE-2024-42073

一、漏洞信息
 漏洞编号：[CVE-2024-42073](https://nvd.nist.gov/vuln/detail/CVE-2024-42073)
 漏洞归属组件：[kernel](https://gitee.com/src-openeuler/kernel)
 漏洞归属的版本：4.19.140,4.19.194,4.19.90,5.10.0,6.1.0,6.1.14,6.1.19,6.1.5,6.1.6,6.1.8,6.4.0,6.6.0
 CVSS V3.0分值：
  BaseScore：5.5 Medium
  Vector：CVSS：3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
 漏洞简述：
  In the Linux kernel, the following vulnerability has been resolved:mlxsw: spectrum_buffers: Fix memory corruptions on Spectrum-4 systemsThe following two shared buffer operations make use of the Shared BufferStatus Register (SBSR): # devlink sb occupancy snapshot pci/0000:01:00.0 # devlink sb occupancy clearmax pci/0000:01:00.0The register has two masks of 256 bits to denote on which ingress /egress ports the register should operate on. Spectrum-4 has more than256 ports, so the register was extended by cited commit with a new port_page  field.However, when filling the register s payload, the driver specifies theports as absolute numbers and not relative to the first port of the portpage, resulting in memory corruptions [1].Fix by specifying the ports relative to the first port of the port page.[1]BUG: KASAN: slab-use-after-free in mlxsw_sp_sb_occ_snapshot+0xb6d/0xbc0Read of size 1 at addr ffff8881068cb00f by task devlink/1566[...]Call Trace: <TASK> dump_stack_lvl+0xc6/0x120 print_report+0xce/0x670 kasan_report+0xd7/0x110 mlxsw_sp_sb_occ_snapshot+0xb6d/0xbc0 mlxsw_devlink_sb_occ_snapshot+0x75/0xb0 devlink_nl_sb_occ_snapshot_doit+0x1f9/0x2a0 genl_family_rcv_msg_doit+0x20c/0x300 genl_rcv_msg+0x567/0x800 netlink_rcv_skb+0x170/0x450 genl_rcv+0x2d/0x40 netlink_unicast+0x547/0x830 netlink_sendmsg+0x8d4/0xdb0 __sys_sendto+0x49b/0x510 __x64_sys_sendto+0xe5/0x1c0 do_syscall_64+0xc1/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f[...]Allocated by task 1: kasan_save_stack+0x33/0x60 kasan_save_track+0x14/0x30 __kasan_kmalloc+0x8f/0xa0 copy_verifier_state+0xbc2/0xfb0 do_check_common+0x2c51/0xc7e0 bpf_check+0x5107/0x9960 bpf_prog_load+0xf0e/0x2690 __sys_bpf+0x1a61/0x49d0 __x64_sys_bpf+0x7d/0xc0 do_syscall_64+0xc1/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7fFreed by task 1: kasan_save_stack+0x33/0x60 kasan_save_track+0x14/0x30 kasan_save_free_info+0x3b/0x60 poison_slab_object+0x109/0x170 __kasan_slab_free+0x14/0x30 kfree+0xca/0x2b0 free_verifier_state+0xce/0x270 do_check_common+0x4828/0xc7e0 bpf_check+0x5107/0x9960 bpf_prog_load+0xf0e/0x2690 __sys_bpf+0x1a61/0x49d0 __x64_sys_bpf+0x7d/0xc0 do_syscall_64+0xc1/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f
 漏洞公开时间：2024-07-30 00:15:06
 漏洞创建时间：2024-07-30 01:18:52
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2024-42073
<details>
<summary>更多参考(点击展开)</summary>

| 参考来源 | 参考链接 | 来源链接 |
| ------- | -------- | -------- |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/942901e0fc74ad4b7992ef7ca9336e68d5fd6d36 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/bf8781ede7bd9a37c0fcabca78976e61300b5a1a |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/bfa86a96912faa0b6142a918db88cc0c738a769e |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/c28947de2bed40217cf256c5d0d16880054fcf13 |  |
| suse_bugzilla | http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-42073 | https://bugzilla.suse.com/show_bug.cgi?id=1228457 |
| suse_bugzilla | https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2024/CVE-2024-42073.mbox | https://bugzilla.suse.com/show_bug.cgi?id=1228457 |
| suse_bugzilla | https://git.kernel.org/stable/c/bfa86a96912faa0b6142a918db88cc0c738a769e | https://bugzilla.suse.com/show_bug.cgi?id=1228457 |
| suse_bugzilla | https://git.kernel.org/stable/c/942901e0fc74ad4b7992ef7ca9336e68d5fd6d36 | https://bugzilla.suse.com/show_bug.cgi?id=1228457 |
| suse_bugzilla | https://git.kernel.org/stable/c/bf8781ede7bd9a37c0fcabca78976e61300b5a1a | https://bugzilla.suse.com/show_bug.cgi?id=1228457 |
| suse_bugzilla | https://git.kernel.org/stable/c/c28947de2bed40217cf256c5d0d16880054fcf13 | https://bugzilla.suse.com/show_bug.cgi?id=1228457 |
| suse_bugzilla | https://www.cve.org/CVERecord?id=CVE-2024-42073 | https://bugzilla.suse.com/show_bug.cgi?id=1228457 |
| ubuntu | https://www.cve.org/CVERecord?id=CVE-2024-42073 | https://ubuntu.com/security/CVE-2024-42073 |
| ubuntu | https://git.kernel.org/linus/c28947de2bed40217cf256c5d0d16880054fcf13 (6.10-rc6) | https://ubuntu.com/security/CVE-2024-42073 |
| ubuntu | https://git.kernel.org/stable/c/bfa86a96912faa0b6142a918db88cc0c738a769e | https://ubuntu.com/security/CVE-2024-42073 |
| ubuntu | https://git.kernel.org/stable/c/942901e0fc74ad4b7992ef7ca9336e68d5fd6d36 | https://ubuntu.com/security/CVE-2024-42073 |
| ubuntu | https://git.kernel.org/stable/c/bf8781ede7bd9a37c0fcabca78976e61300b5a1a | https://ubuntu.com/security/CVE-2024-42073 |
| ubuntu | https://git.kernel.org/stable/c/c28947de2bed40217cf256c5d0d16880054fcf13 | https://ubuntu.com/security/CVE-2024-42073 |
| ubuntu | https://nvd.nist.gov/vuln/detail/CVE-2024-42073 | https://ubuntu.com/security/CVE-2024-42073 |
| ubuntu | https://launchpad.net/bugs/cve/CVE-2024-42073 | https://ubuntu.com/security/CVE-2024-42073 |
| ubuntu | https://security-tracker.debian.org/tracker/CVE-2024-42073 | https://ubuntu.com/security/CVE-2024-42073 |
| debian |  | https://security-tracker.debian.org/tracker/CVE-2024-42073 |

</details>

漏洞分析指导链接：
  https://gitee.com/openeuler/cve-manager/blob/master/cve-vulner-manager/doc/md/manual.md
 漏洞数据来源:
  openBrain开源漏洞感知系统
 漏洞补丁信息：
  <details>
<summary>详情(点击展开)</summary>

| 影响的包 | 修复版本 | 修复补丁 | 问题引入补丁 | 来源  |
| ------- | -------- | ------- | -------- | --------- |
|  |  | https://git.kernel.org/stable/c/942901e0fc74ad4b7992ef7ca9336e68d5fd6d36 |  | nvd |
|  |  | https://git.kernel.org/stable/c/bf8781ede7bd9a37c0fcabca78976e61300b5a1a |  | nvd |
|  |  | https://git.kernel.org/stable/c/bfa86a96912faa0b6142a918db88cc0c738a769e |  | nvd |
|  |  | https://git.kernel.org/stable/c/c28947de2bed40217cf256c5d0d16880054fcf13 |  | nvd |
| linux |  | https://git.kernel.org/linus/c28947de2bed40217cf256c5d0d16880054fcf13 | https://git.kernel.org/linus/f8538aec88b46642553a9ba9efa0952f5958dbed | 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:mlxsw: spectrum_buffers: Fix memory corruptions on Spectrum-4 systemsThe following two shared buffer operations make use of the Shared BufferStatus Register (SBSR): # devlink sb occupancy snapshot pci/0000:01:00.0 # devlink sb occupancy clearmax pci/0000:01:00.0The register has two masks of 256 bits to denote on which ingress /egress ports the register should operate on. Spectrum-4 has more than256 ports, so the register was extended by cited commit with a new port_page  field.However, when filling the register s payload, the driver specifies theports as absolute numbers and not relative to the first port of the portpage, resulting in memory corruptions [1].Fix by specifying the ports relative to the first port of the port page.[1]BUG: KASAN: slab-use-after-free in mlxsw_sp_sb_occ_snapshot+0xb6d/0xbc0Read of size 1 at addr ffff8881068cb00f by task devlink/1566[...]Call Trace: <TASK> dump_stack_lvl+0xc6/0x120 print_report+0xce/0x670 kasan_report+0xd7/0x110 mlxsw_sp_sb_occ_snapshot+0xb6d/0xbc0 mlxsw_devlink_sb_occ_snapshot+0x75/0xb0 devlink_nl_sb_occ_snapshot_doit+0x1f9/0x2a0 genl_family_rcv_msg_doit+0x20c/0x300 genl_rcv_msg+0x567/0x800 netlink_rcv_skb+0x170/0x450 genl_rcv+0x2d/0x40 netlink_unicast+0x547/0x830 netlink_sendmsg+0x8d4/0xdb0 __sys_sendto+0x49b/0x510 __x64_sys_sendto+0xe5/0x1c0 do_syscall_64+0xc1/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f[...]Allocated by task 1: kasan_save_stack+0x33/0x60 kasan_save_track+0x14/0x30 __kasan_kmalloc+0x8f/0xa0 copy_verifier_state+0xbc2/0xfb0 do_check_common+0x2c51/0xc7e0 bpf_check+0x5107/0x9960 bpf_prog_load+0xf0e/0x2690 __sys_bpf+0x1a61/0x49d0 __x64_sys_bpf+0x7d/0xc0 do_syscall_64+0xc1/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7fFreed by task 1: kasan_save_stack+0x33/0x60 kasan_save_track+0x14/0x30 kasan_save_free_info+0x3b/0x60 poison_slab_object+0x109/0x170 __kasan_slab_free+0x14/0x30 kfree+0xca/0x2b0 free_verifier_state+0xce/0x270 do_check_common+0x4828/0xc7e0 bpf_check+0x5107/0x9960 bpf_prog_load+0xf0e/0x2690 __sys_bpf+0x1a61/0x49d0 __x64_sys_bpf+0x7d/0xc0 do_syscall_64+0xc1/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f  
 openEuler评分：
  5.5
 Vector：CVSS：3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
 受影响版本排查(受影响/不受影响)：
  1.openEuler-24.03-LTS(6.6.0):受影响
2.openEuler-20.03-LTS-SP4(4.19.90):不受影响
3.openEuler-22.03-LTS-SP1(5.10.0):不受影响
4.openEuler-22.03-LTS-SP3(5.10.0):不受影响
5.openEuler-22.03-LTS-SP4(5.10.0):不受影响
6.master(6.1.0):不受影响
7.openEuler-24.03-LTS-Next(6.6.0):不受影响

修复是否涉及abi变化(是/否)：
  1.openEuler-20.03-LTS-SP4(4.19.90):否
2.openEuler-22.03-LTS-SP1(5.10.0):否
3.openEuler-22.03-LTS-SP3(5.10.0):否
4.master(6.1.0):否
5.openEuler-24.03-LTS(6.6.0):否
6.openEuler-24.03-LTS-Next(6.6.0):否
7.openEuler-22.03-LTS-SP4(5.10.0):否

三、漏洞修复
安全公告链接：https://www.openeuler.org/zh/security/safety-bulletin/detail/?id=openEuler-SA-2024-2076

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