vulnerability
CentOS Linux: CVE-2023-4921: Important: kernel security and bug fix update (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:L/AC:L/Au:S/C:C/I:C/A:C) | 2023-09-12 | 2024-03-13 | 2025-01-28 |
Severity
7
CVSS
(AV:L/AC:L/Au:S/C:C/I:C/A:C)
Published
2023-09-12
Added
2024-03-13
Modified
2025-01-28
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-kernelcentos-upgrade-kernel-rtcentos-upgrade-kpatch-patch-3_10_0-1160_102_1centos-upgrade-kpatch-patch-3_10_0-1160_102_1-debuginfocentos-upgrade-kpatch-patch-3_10_0-1160_105_1centos-upgrade-kpatch-patch-3_10_0-1160_105_1-debuginfocentos-upgrade-kpatch-patch-3_10_0-1160_108_1centos-upgrade-kpatch-patch-3_10_0-1160_108_1-debuginfocentos-upgrade-kpatch-patch-3_10_0-1160_99_1centos-upgrade-kpatch-patch-3_10_0-1160_99_1-debuginfo
References
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