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CentOS Linux: CVE-2023-4921: Important: kernel security and bug fix update (Multiple Advisories)

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CentOS Linux: CVE-2023-4921: Important: kernel security and bug fix update (Multiple Advisories)

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
09/12/2023
Created
03/14/2024
Added
03/13/2024
Modified
03/15/2024

Description

A use-after-free vulnerability in the Linux kernel's net/sched: sch_qfq component can be exploited to achieve local privilege escalation. When the plug qdisc is used as a class of the qfq qdisc, sending network packets triggers use-after-free in qfq_dequeue() due to the incorrect .peek handler of sch_plug and lack of error checking in agg_dequeue(). We recommend upgrading past commit 8fc134fee27f2263988ae38920bc03da416b03d8.

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
  • centos-upgrade-kpatch-patch-3_10_0-1160_99_1
  • centos-upgrade-kpatch-patch-3_10_0-1160_99_1-debuginfo

References

  • CVE-2023-4921

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