Insufficient Type Distinction The advisory has been revoked - it doesn't affect any version of package kernel-headers (opens in a new tab)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-12491129
- published5 Sept 2025
- disclosed4 Sept 2025
Introduced: 4 Sep 2025
CVE-2025-38686 (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:
userfaultfd: fix a crash in UFFDIO_MOVE when PMD is a migration entry
When UFFDIO_MOVE encounters a migration PMD entry, it proceeds with obtaining a folio and accessing it even though the entry is swp_entry_t. Add the missing check and let split_huge_pmd() handle migration entries. While at it also remove unnecessary folio check.
[surenb@google.com: remove extra folio check, per David]
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2393192
- https://access.redhat.com/security/cve/CVE-2025-38686
- https://git.kernel.org/stable/c/1202abad7a7ccd28c426d2844771a387b07629a4
- https://git.kernel.org/stable/c/7f1101a0a181243ad587ececdffc4845f035549f
- https://git.kernel.org/stable/c/aba6faec0103ed8f169be8dce2ead41fcb689446
- https://git.kernel.org/stable/c/bb81c18dbd42650c844e160cafa7cbb20243a96a