CVE-2025-38306 Affecting kernel-kdump package, versions *


Severity

Recommended
medium

Based on CentOS security rating.

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  • Snyk IDSNYK-CENTOS6-KERNELKDUMP-10715881
  • published11 Jul 2025
  • disclosed10 Jul 2025

Introduced: 10 Jul 2025

NewCVE-2025-38306  (opens in a new tab)

How to fix?

There is no fixed version for Centos:6 kernel-kdump.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-kdump package and not the kernel-kdump package as distributed by Centos. See How to fix? for Centos:6 relevant fixed versions and status.

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

fs/fhandle.c: fix a race in call of has_locked_children()

may_decode_fh() is calling has_locked_children() while holding no locks. That's an oopsable race...

The rest of the callers are safe since they are holding namespace_sem and are guaranteed a positive refcount on the mount in question.

Rename the current has_locked_children() to __has_locked_children(), make it static and switch the fs/namespace.c users to it.

Make has_locked_children() a wrapper for __has_locked_children(), calling the latter under read_seqlock_excl(&mount_lock).

CVSS Base Scores

version 3.1