CVE-2025-40057 The advisory has been revoked - it doesn't affect any version of package kernel-headers (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RHEL10-KERNELHEADERS-13736860
- published29 Oct 2025
- disclosed28 Oct 2025
Introduced: 28 Oct 2025
CVE-2025-40057 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:10.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-headers package and not the kernel-headers package as distributed by RHEL.
In the Linux kernel, the following vulnerability has been resolved:
ptp: Add a upper bound on max_vclocks
syzbot reported WARNING in max_vclocks_store.
This occurs when the argument max is too large for kcalloc to handle.
Extend the guard to guard against values that are too large for kcalloc
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2406752
- https://access.redhat.com/security/cve/CVE-2025-40057
- https://git.kernel.org/stable/c/35ce5f163889dbce88eda1df661b357a09bbed87
- https://git.kernel.org/stable/c/8dd446056336faa2283d62cefc2f576536845edc
- https://git.kernel.org/stable/c/e9f35294e18da82162004a2f35976e7031aaf7f9