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NULL Pointer Dereference The advisory has been revoked - it doesn't affect any version of package kernel-64k-modules-internal  (opens in a new tab)

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EPSS
0.07% (22nd percentile)

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  • Snyk IDSNYK-CENTOS9-KERNEL64KMODULESINTERNAL-8850020
  • published28 Feb 2025
  • disclosed31 Jan 2025
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Introduced: 31 Jan 2025

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

Amendment

The Centos security team deemed this advisory irrelevant for Centos:9.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-64k-modules-internal package and not the kernel-64k-modules-internal package as distributed by Centos.

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->transport at NULL, leading to a NULL pointer dereference.