Out-of-bounds Write Affecting kernel-64k-devel-matched package, versions <0:5.14.0-611.27.1.el9_7


Severity

Recommended
medium

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.01% (3rd percentile)

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  • Snyk IDSNYK-ROCKY9-KERNEL64KDEVELMATCHED-15248608
  • published9 Feb 2026
  • disclosed19 Aug 2025

Introduced: 19 Aug 2025

CVE-2025-38568  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:9 kernel-64k-devel-matched to version 0:5.14.0-611.27.1.el9_7 or higher.
This issue was patched in RLSA-2026:1617.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-64k-devel-matched package and not the kernel-64k-devel-matched package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:9 relevant fixed versions and status.

In the Linux kernel, the following vulnerability has been resolved:

net/sched: mqprio: fix stack out-of-bounds write in tc entry parsing

TCA_MQPRIO_TC_ENTRY_INDEX is validated using NLA_POLICY_MAX(NLA_U32, TC_QOPT_MAX_QUEUE), which allows the value TC_QOPT_MAX_QUEUE (16). This leads to a 4-byte out-of-bounds stack write in the fp[] array, which only has room for 16 elements (0–15).

Fix this by changing the policy to allow only up to TC_QOPT_MAX_QUEUE - 1.

CVSS Base Scores

version 3.1