CVE-2025-38552 The advisory has been revoked - it doesn't affect any version of package kernel-headers (opens in a new tab)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-12014423
- published19 Aug 2025
- disclosed16 Aug 2025
Introduced: 16 Aug 2025
CVE-2025-38552 (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:
mptcp: plug races between subflow fail and subflow creation
We have races similar to the one addressed by the previous patch between subflow failing and additional subflow creation. They are just harder to trigger.
The solution is similar. Use a separate flag to track the condition 'socket state prevent any additional subflow creation' protected by the fallback lock.
The socket fallback makes such flag true, and also receiving or sending an MP_FAIL option.
The field 'allow_infinite_fallback' is now always touched under the relevant lock, we can drop the ONCE annotation on write.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2388942
- https://access.redhat.com/security/cve/CVE-2025-38552
- https://git.kernel.org/stable/c/659da22dee5ff316ba63bdaeeac7b58b5442f6c2
- https://git.kernel.org/stable/c/7c96d519ee15a130842a6513530b4d20acd2bfcd
- https://git.kernel.org/stable/c/c476d627584b7589a134a8b48dd5c6639e4401c5
- https://git.kernel.org/stable/c/def5b7b2643ebba696fc60ddf675dca13f073486
- https://git.kernel.org/stable/c/f81b6fbe13c7fc413b5158cdffc6a59391a2a8db
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
- https://cert-portal.siemens.com/productcert/html/ssa-032379.html