CVE-2025-21769
Linux Kernel PTP Module Use-After-Free Vulnerability
Description
In the Linux kernel, the following vulnerability has been resolved: ptp: vmclock: Add .owner to vmclock_miscdev_fops Without the .owner field, the module can be unloaded while /dev/vmclock0 is open, leading to an oops.
INFO
Published Date :
Feb. 27, 2025, 3:15 a.m.
Last Modified :
March 5, 2025, 6:47 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update the Linux kernel to the latest stable version.
- Verify that the .owner field is correctly set in vmclock_miscdev_fops.
- Rebuild and deploy the kernel with the fix.
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-2025-21769.
| URL | Resource |
|---|---|
| https://git.kernel.org/stable/c/3b5709225b43ee33e1026dd1fc0949a7f19b5289 | Patch |
| https://git.kernel.org/stable/c/7b07b040257c1b658ef3eca86e4b6ae02d65069c | Patch |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-21769 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-2025-21769
weaknesses.
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-2025-21769 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-21769 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.
-
Initial Analysis by [email protected]
Mar. 05, 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 NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:6.14:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.13 from (excluding) 6.13.4 *cpe:2.3:o:linux:linux_kernel:6.14:rc2:*:*:*:*:*:* Added Reference Type kernel.org: https://git.kernel.org/stable/c/3b5709225b43ee33e1026dd1fc0949a7f19b5289 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/7b07b040257c1b658ef3eca86e4b6ae02d65069c Types: Patch -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Feb. 27, 2025
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: ptp: vmclock: Add .owner to vmclock_miscdev_fops Without the .owner field, the module can be unloaded while /dev/vmclock0 is open, leading to an oops. Added Reference https://git.kernel.org/stable/c/3b5709225b43ee33e1026dd1fc0949a7f19b5289 Added Reference https://git.kernel.org/stable/c/7b07b040257c1b658ef3eca86e4b6ae02d65069c