CVE-2025-21904

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2025-21904
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().

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/29e0cd296c87240278e2f7ea4cf3f496b60c03af Patch
https://git.kernel.org/stable/c/56cddf71cce3b15b078e937fadab29962b6f6643 Patch
https://git.kernel.org/stable/c/597c27e5f04cb50e56cc9aeda75d3e42b6b89c3e Patch
https://git.kernel.org/stable/c/7b5fe58959822e6cfa884327cabba6be3b01883d Patch
https://git.kernel.org/stable/c/8e4e08ca4cc634b337bb74bc9a70758fdeda0bcb Patch
https://git.kernel.org/stable/c/90d302619ee7ce5ed0c69c29c290bdccfde66418 Patch
https://git.kernel.org/stable/c/990fff6980d0c1693d60a812f58dbf93eab0473f Patch
https://git.kernel.org/stable/c/a466fd7e9fafd975949e5945e2f70c33a94b1a70 Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
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:*:*:*:*:*:*
History

15 Apr 2025, 16:52

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: caif_virtio: se corrige una comprobación incorrecta del puntero en cfv_probe() del_vqs() libera colas virtuales. Por lo tanto, se debe comprobar si el puntero cfv->vq_tx es nulo antes de llamarlo, no cfv->vdev. Además, la implementación actual es redundante porque se desreferencia el puntero cfv->vdev antes de comprobar si es nulo. Para solucionar esto, compruebe si el puntero cfv->vq_tx es nulo en lugar de cfv->vdev antes de llamar a del_vqs().
References () https://git.kernel.org/stable/c/29e0cd296c87240278e2f7ea4cf3f496b60c03af - () https://git.kernel.org/stable/c/29e0cd296c87240278e2f7ea4cf3f496b60c03af - Patch
References () https://git.kernel.org/stable/c/56cddf71cce3b15b078e937fadab29962b6f6643 - () https://git.kernel.org/stable/c/56cddf71cce3b15b078e937fadab29962b6f6643 - Patch
References () https://git.kernel.org/stable/c/597c27e5f04cb50e56cc9aeda75d3e42b6b89c3e - () https://git.kernel.org/stable/c/597c27e5f04cb50e56cc9aeda75d3e42b6b89c3e - Patch
References () https://git.kernel.org/stable/c/7b5fe58959822e6cfa884327cabba6be3b01883d - () https://git.kernel.org/stable/c/7b5fe58959822e6cfa884327cabba6be3b01883d - Patch
References () https://git.kernel.org/stable/c/8e4e08ca4cc634b337bb74bc9a70758fdeda0bcb - () https://git.kernel.org/stable/c/8e4e08ca4cc634b337bb74bc9a70758fdeda0bcb - Patch
References () https://git.kernel.org/stable/c/90d302619ee7ce5ed0c69c29c290bdccfde66418 - () https://git.kernel.org/stable/c/90d302619ee7ce5ed0c69c29c290bdccfde66418 - Patch
References () https://git.kernel.org/stable/c/990fff6980d0c1693d60a812f58dbf93eab0473f - () https://git.kernel.org/stable/c/990fff6980d0c1693d60a812f58dbf93eab0473f - Patch
References () https://git.kernel.org/stable/c/a466fd7e9fafd975949e5945e2f70c33a94b1a70 - () https://git.kernel.org/stable/c/a466fd7e9fafd975949e5945e2f70c33a94b1a70 - Patch
First Time Linux linux Kernel
Linux
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
CWE CWE-476
CPE cpe:2.3:o:linux:linux_kernel:6.14:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.14:rc1:*:*:*:*:*:*
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:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

01 Apr 2025, 16:15

Type Values Removed Values Added
New CVE
Information

Published : 2025-04-01 16:15

Updated : 2025-04-15 16:52

NVD link : CVE-2025-21904

Mitre link : CVE-2025-21904

CVE.ORG link : CVE-2025-21904

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-476

NULL Pointer Dereference