Out-of-bounds Write Affecting kernel-modules-extra package, versions <0:5.14.0-687.59.1.el9_8


Severity

Recommended
0.0
high
0
10

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.17% (7th percentile)

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  • Snyk IDSNYK-ROCKY9-KERNELMODULESEXTRA-22221546
  • published5 Nov 2026
  • disclosed19 Jul 2026

Introduced: 19 Jul 2026

CVE-2026-63956  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:9 kernel-modules-extra to version 0:5.14.0-687.59.1.el9_8 or higher.
This issue was patched in RLSA-2026:86033.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-modules-extra package and not the kernel-modules-extra 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:

USB: serial: cypress_m8: fix memory corruption with small endpoint

Make sure that the interrupt-out endpoint max packet size is at least eight bytes to avoid user-controlled slab corruption or NULL-pointer dereference should a malicious device report a smaller size.

CVSS Base Scores

version 3.1