NULL Pointer Dereference Affecting kernel-debug-devel-matched package, versions <0:6.12.0-55.19.1.0.1.el10_0


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.03% (9th percentile)

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  • Snyk IDSNYK-ORACLE10-KERNELDEBUGDEVELMATCHED-10626873
  • published4 Jul 2025
  • disclosed31 Jan 2025

Introduced: 31 Jan 2025

CVE-2025-21669  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade Oracle:10 kernel-debug-devel-matched to version 0:6.12.0-55.19.1.0.1.el10_0 or higher.
This issue was patched in ELSA-2025-8669.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-debug-devel-matched package and not the kernel-debug-devel-matched package as distributed by Oracle. See How to fix? for Oracle:10 relevant fixed versions and status.

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

vsock/virtio: discard packets if the transport changes

If the socket has been de-assigned or assigned to another transport, we must discard any packets received because they are not expected and would cause issues when we access vsk->transport.

A possible scenario is described by Hyunwoo Kim in the attached link, where after a first connect() interrupted by a signal, and a second connect() failed, we can find vsk-&gt;transport at NULL, leading to a NULL pointer dereference.

CVSS Base Scores

version 3.1