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CentOS Linux: CVE-2023-4208: Important: kpatch-patch security update (Multiple Advisories)

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CentOS Linux: CVE-2023-4208: Important: kpatch-patch security update (Multiple Advisories)

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
09/06/2023
Created
11/09/2023
Added
11/08/2023
Modified
01/29/2024

Description

A use-after-free vulnerability in the Linux kernel's net/sched: cls_u32 component can be exploited to achieve local privilege escalation. When u32_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 3044b16e7c6fe5d24b1cdbcf1bd0a9d92d1ebd81.

Solution(s)

  • centos-upgrade-kernel
  • centos-upgrade-kernel-rt
  • centos-upgrade-kpatch-patch-3_10_0-1160_102_1
  • centos-upgrade-kpatch-patch-3_10_0-1160_102_1-debuginfo
  • centos-upgrade-kpatch-patch-3_10_0-1160_90_1
  • centos-upgrade-kpatch-patch-3_10_0-1160_90_1-debuginfo
  • centos-upgrade-kpatch-patch-3_10_0-1160_92_1
  • centos-upgrade-kpatch-patch-3_10_0-1160_92_1-debuginfo
  • centos-upgrade-kpatch-patch-3_10_0-1160_95_1
  • centos-upgrade-kpatch-patch-3_10_0-1160_95_1-debuginfo
  • centos-upgrade-kpatch-patch-3_10_0-1160_99_1
  • centos-upgrade-kpatch-patch-3_10_0-1160_99_1-debuginfo

References

  • CVE-2023-4208

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