CVE-2025-38565 The advisory has been revoked - it doesn't affect any version of package kernel-headers (opens in a new tab)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-12031978
- published21 Aug 2025
- disclosed19 Aug 2025
Introduced: 19 Aug 2025
CVE-2025-38565 (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:
perf/core: Exit early on perf_mmap() fail
When perf_mmap() fails to allocate a buffer, it still invokes the event_mapped() callback of the related event. On X86 this might increase the perf_rdpmc_allowed reference counter. But nothing undoes this as perf_mmap_close() is never called in this case, which causes another reference count leak.
Return early on failure to prevent that.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2389506
- https://access.redhat.com/security/cve/CVE-2025-38565
- https://git.kernel.org/stable/c/07091aade394f690e7b655578140ef84d0e8d7b0
- https://git.kernel.org/stable/c/163b0d1a209fe0df5476c1df2330ca12b55abf92
- https://git.kernel.org/stable/c/27d44145bd576bbef9bf6165bcd78128ec3e6cbd
- https://git.kernel.org/stable/c/5ffda7f3ed76ec8defc19d985e33b3b82ba07839
- https://git.kernel.org/stable/c/7ff8521f30c4c2fcd4e88bd7640486602bf8a650
- https://git.kernel.org/stable/c/92043120a2e992800580855498ab8507e1b22db9
- https://git.kernel.org/stable/c/9b90a48c7de828a15c7a4fc565d46999c6e22d6b
- https://git.kernel.org/stable/c/de85e72598d89880a02170a1cbc27b35a7d978a9
- https://git.kernel.org/stable/c/f41e9eba77bf97626e04296dc5677d02816d2432
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html