Improper Update of Reference Count The advisory has been revoked - it doesn't affect any version of package kernel-headers (opens in a new tab)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-14548872
- published23 Dec 2025
- disclosed22 Dec 2025
Introduced: 22 Dec 2025
CVE-2025-68329 (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:
tracing: Fix WARN_ON in tracing_buffers_mmap_close for split VMAs
When a VMA is split (e.g., by partial munmap or MAP_FIXED), the kernel calls vm_ops->close on each portion. For trace buffer mappings, this results in ring_buffer_unmap() being called multiple times while ring_buffer_map() was only called once.
This causes ring_buffer_unmap() to return -ENODEV on subsequent calls because user_mapped is already 0, triggering a WARN_ON.
Trace buffer mappings cannot support partial mappings because the ring buffer structure requires the complete buffer including the meta page.
Fix this by adding a may_split callback that returns -EINVAL to prevent VMA splits entirely.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2424330
- https://access.redhat.com/security/cve/CVE-2025-68329
- https://git.kernel.org/stable/c/45053c12c45f0fb8ef6ab95118dd928d2fec0255
- https://git.kernel.org/stable/c/922fdd0b755a84f9933b3ca195f60092b6bb88ee
- https://git.kernel.org/stable/c/b042fdf18e89a347177a49e795d8e5184778b5b6