PT-2025-14285 · Linux+7 · Linux Kernel+7
Published
2025-02-27
·
Updated
2026-04-20
·
CVE-2025-21904
CVSS v3.1
5.5
Medium
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
A vulnerability in the Linux kernel has been resolved, specifically in the caif virtio module. The issue was related to a wrong pointer check in the
cfv probe() function. The del vqs() function frees virtqueues, and therefore, the cfv->vq tx pointer should be checked for NULL before calling it, not cfv->vdev. The current implementation was redundant because the pointer cfv->vdev is dereferenced before it is checked for NULL. This has been fixed by checking cfv->vq tx for NULL instead of cfv->vdev before calling del vqs().Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
NULL Pointer Dereference
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Astra Linux
Debian
Linuxmint
Linux Kernel
Red Os
Suse
Ubuntu