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Huawei EulerOS: CVE-2023-4207: kernel security update

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Huawei EulerOS: CVE-2023-4207: kernel security update

Severity
7
CVSS
(AV:L/AC:L/Au:S/C:C/I:C/A:C)
Published
09/06/2023
Created
02/13/2024
Added
02/12/2024
Modified
01/30/2025

Description

A use-after-free vulnerability in the Linux kernel's net/sched: cls_fw component can be exploited to achieve local privilege escalation. When fw_change() is called on an existing filter, the whole tcf_result struct is always copied into the new instance of the filter. This causes a problem when updating a filter bound to a class, as tcf_unbind_filter() is always called on the old instance in the success path, decreasing filter_cnt of the still referenced class and allowing it to be deleted, leading to a use-after-free. We recommend upgrading past commit 76e42ae831991c828cffa8c37736ebfb831ad5ec.

Solution(s)

  • huawei-euleros-2_0_sp5-upgrade-kernel
  • huawei-euleros-2_0_sp5-upgrade-kernel-devel
  • huawei-euleros-2_0_sp5-upgrade-kernel-headers
  • huawei-euleros-2_0_sp5-upgrade-kernel-tools
  • huawei-euleros-2_0_sp5-upgrade-kernel-tools-libs
  • huawei-euleros-2_0_sp5-upgrade-perf
  • huawei-euleros-2_0_sp5-upgrade-python-perf

References

  • https://attackerkb.com/topics/cve-2023-4207
  • CVE - 2023-4207
  • EulerOS-SA-2024-1144
  • 查看数 709
  • 已创建
  • 最后回复

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