CVE-2025-21904

Severity CVSS v4.0:

Pending analysis

Type:

CWE-476 NULL Pointer Dereference

Publication date:

01/04/2025

Last modified:

03/11/2025

Description

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().

Impact

Vector 3.x

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 5.50 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x

5.50

Severity 3.x

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:linux:linux_kernel::::::::	3.10 (including)	5.4.291 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.5 (including)	5.10.235 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.11 (including)	5.15.179 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.16 (including)	6.1.131 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.2 (including)	6.6.83 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.7 (including)	6.12.19 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.13 (including)	6.13.7 (excluding)
cpe:2.3:o:linux:linux_kernel:6.14:rc1::::::
cpe:2.3:o:linux:linux_kernel:6.14:rc2::::::
cpe:2.3:o:linux:linux_kernel:6.14:rc3::::::
cpe:2.3:o:linux:linux_kernel:6.14:rc4::::::
cpe:2.3:o:linux:linux_kernel:6.14:rc5::::::

To consult the complete list of CPE names with products and versions, see this page

CVE-2025-21904

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools