🛡️ AZL-60346 — kernel

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

CVE-2025-21904 affecting package kernel for versions less than 6.6.85.1-2

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

caif_virtio: fix wrong pointer check in cfv_probe()

del_vqs() frees virtqueues, therefore cfv->vq_tx pointer should be checked

for NULL before calling it, not cfv->vdev. Also the current implementation

is redundant because the pointer cfv->vdev is dereferenced before it is

checked for NULL.

Fix this by checking cfv->vq_tx for NULL instead of cfv->vdev before

calling del_vqs().

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

Affected software

AZL-60346 is recorded against 1 package.

  • kernel (fixed in 6.6.85.1-2)

Timeline and source

Published on 1 April 2025 and last revised on 21 April 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

nvd.nist.gov (Web)

Details

Severity Unknown
CVSS Score N/A
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2025-04-01
Updated 2026-08-12
Modified 2026-04-21
Fix URL N/A

Affected Packages

Software From version Fixed in
kernel — 6.6.85.1-2

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