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CentOS Linux: CVE-2023-4623: Important: kpatch-patch security update (Multiple Advisories)

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CentOS Linux: CVE-2023-4623: 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
01/26/2024
Added
01/25/2024
Modified
04/24/2024

Description

A use-after-free vulnerability in the Linux kernel's net/sched: sch_hfsc (HFSC qdisc traffic control) component can be exploited to achieve local privilege escalation. If a class with a link-sharing curve (i.e. with the HFSC_FSC flag set) has a parent without a link-sharing curve, then init_vf() will call vttree_insert() on the parent, but vttree_remove() will be skipped in update_vf(). This leaves a dangling pointer that can cause a use-after-free. We recommend upgrading past commit b3d26c5702c7d6c45456326e56d2ccf3f103e60f.

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_105_1
  • centos-upgrade-kpatch-patch-3_10_0-1160_105_1-debuginfo
  • centos-upgrade-kpatch-patch-3_10_0-1160_108_1
  • centos-upgrade-kpatch-patch-3_10_0-1160_108_1-debuginfo

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