Out-of-bounds Write Affecting kernel-default-base package, versions <5.14.21-150500.55.7.1.150500.6.2.5


Severity

Recommended
medium

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.05% (20th percentile)

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  • Snyk IDSNYK-SLES155-KERNELDEFAULTBASE-5782980
  • published19 Jul 2023
  • disclosed18 Jul 2023

Introduced: 18 Jul 2023

CVE-2023-31436  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade SLES:15.5 kernel-default-base to version 5.14.21-150500.55.7.1.150500.6.2.5 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-default-base package and not the kernel-default-base package as distributed by SLES. See How to fix? for SLES:15.5 relevant fixed versions and status.

qfq_change_class in net/sched/sch_qfq.c in the Linux kernel before 6.2.13 allows an out-of-bounds write because lmax can exceed QFQ_MIN_LMAX.

CVSS Scores

version 3.1