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CentOS Linux: CVE-2023-3776: Important: kernel security, bug fix, and enhancement update (Multiple Advisories)

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CentOS Linux: CVE-2023-3776: Important: kernel security, bug fix, and enhancement update (Multiple Advisories)

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
07/21/2023
Created
09/13/2023
Added
09/13/2023
Modified
11/22/2023

Description

A use-after-free vulnerability in the Linux kernel's net/sched: cls_fw component can be exploited to achieve local privilege escalation. If tcf_change_indev() fails, fw_set_parms() will immediately return an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability. We recommend upgrading past commit 0323bce598eea038714f941ce2b22541c46d488f.

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
  • centos-upgrade-kpatch-patch-4_18_0-477_10_1
  • centos-upgrade-kpatch-patch-4_18_0-477_10_1-debuginfo
  • centos-upgrade-kpatch-patch-4_18_0-477_10_1-debugsource
  • centos-upgrade-kpatch-patch-4_18_0-477_13_1
  • centos-upgrade-kpatch-patch-4_18_0-477_13_1-debuginfo
  • centos-upgrade-kpatch-patch-4_18_0-477_13_1-debugsource
  • centos-upgrade-kpatch-patch-4_18_0-477_15_1
  • centos-upgrade-kpatch-patch-4_18_0-477_15_1-debuginfo
  • centos-upgrade-kpatch-patch-4_18_0-477_15_1-debugsource
  • centos-upgrade-kpatch-patch-4_18_0-477_21_1
  • centos-upgrade-kpatch-patch-4_18_0-477_21_1-debuginfo
  • centos-upgrade-kpatch-patch-4_18_0-477_21_1-debugsource
  • centos-upgrade-kpatch-patch-5_14_0-284_11_1
  • centos-upgrade-kpatch-patch-5_14_0-284_11_1-debuginfo
  • centos-upgrade-kpatch-patch-5_14_0-284_11_1-debugsource
  • centos-upgrade-kpatch-patch-5_14_0-284_18_1
  • centos-upgrade-kpatch-patch-5_14_0-284_18_1-debuginfo
  • centos-upgrade-kpatch-patch-5_14_0-284_18_1-debugsource
  • centos-upgrade-kpatch-patch-5_14_0-284_25_1
  • centos-upgrade-kpatch-patch-5_14_0-284_25_1-debuginfo
  • centos-upgrade-kpatch-patch-5_14_0-284_25_1-debugsource

References

  • CVE-2023-3776

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