NULL Pointer Dereference Affecting kernel-debug-core package, versions <0:5.14.0-570.12.1.0.1.el9_6


Severity

Recommended
0.0
medium
0
10

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.21% (12th percentile)

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  • Snyk IDSNYK-ORACLE9-KERNELDEBUGCORE-10239654
  • published24 May 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:9 kernel-debug-core to version 0:5.14.0-570.12.1.0.1.el9_6 or higher.
This issue was patched in ELSA-2025-6966.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-debug-core package and not the kernel-debug-core package as distributed by Oracle. See How to fix? for Oracle:9 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