CVE-2025-21904
"Linux Kernel Virtio Queue Pointer NULL Dereference Vulnerability"
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().
INFO
Published Date :
April 1, 2025, 4:15 p.m.
Last Modified :
April 15, 2025, 4:52 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
1.8
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-21904.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-21904 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-21904 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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Initial Analysis by [email protected]
Apr. 15, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-476 Added CPE Configuration OR *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:*:*:*:*:*:*:*:* versions from (including) 3.10 up to (excluding) 5.4.291 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.179 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.10.235 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.1.131 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.83 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.12.19 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.13 up to (excluding) 6.13.7 *cpe:2.3:o:linux:linux_kernel:6.14:rc4:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.14:rc5:*:*:*:*:*:* Added Reference Type kernel.org: https://git.kernel.org/stable/c/29e0cd296c87240278e2f7ea4cf3f496b60c03af Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/56cddf71cce3b15b078e937fadab29962b6f6643 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/597c27e5f04cb50e56cc9aeda75d3e42b6b89c3e Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/7b5fe58959822e6cfa884327cabba6be3b01883d Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/8e4e08ca4cc634b337bb74bc9a70758fdeda0bcb Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/90d302619ee7ce5ed0c69c29c290bdccfde66418 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/990fff6980d0c1693d60a812f58dbf93eab0473f Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/a466fd7e9fafd975949e5945e2f70c33a94b1a70 Types: Patch -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Apr. 01, 2025
Action Type Old Value New Value Added 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(). Added Reference https://git.kernel.org/stable/c/29e0cd296c87240278e2f7ea4cf3f496b60c03af Added Reference https://git.kernel.org/stable/c/56cddf71cce3b15b078e937fadab29962b6f6643 Added Reference https://git.kernel.org/stable/c/597c27e5f04cb50e56cc9aeda75d3e42b6b89c3e Added Reference https://git.kernel.org/stable/c/7b5fe58959822e6cfa884327cabba6be3b01883d Added Reference https://git.kernel.org/stable/c/8e4e08ca4cc634b337bb74bc9a70758fdeda0bcb Added Reference https://git.kernel.org/stable/c/90d302619ee7ce5ed0c69c29c290bdccfde66418 Added Reference https://git.kernel.org/stable/c/990fff6980d0c1693d60a812f58dbf93eab0473f Added Reference https://git.kernel.org/stable/c/a466fd7e9fafd975949e5945e2f70c33a94b1a70
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-21904 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-21904
weaknesses.