NULL Pointer Dereference Affecting kernel-doc package, versions <0:4.18.0-372.179.1.el8_6


Severity

Recommended
medium

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.61% (47th percentile)

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  • Snyk IDSNYK-RHEL8-KERNELDOC-15519710
  • published13 Mar 2026
  • disclosed24 Dec 2025

Introduced: 24 Dec 2025

CVE-2025-68349  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade RHEL:8 kernel-doc to version 0:4.18.0-372.179.1.el8_6 or higher.
This issue was patched in RHSA-2026:2490.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-doc package and not the kernel-doc package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

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

NFSv4/pNFS: Clear NFS_INO_LAYOUTCOMMIT in pnfs_mark_layout_stateid_invalid

Fixes a crash when layout is null during this call stack:

write_inode -> nfs4_write_inode -> pnfs_layoutcommit_inode

pnfs_set_layoutcommit relies on the lseg refcount to keep the layout around. Need to clear NFS_INO_LAYOUTCOMMIT otherwise we might attempt to reference a null layout.

CVSS Base Scores

version 3.1