Resource Exhaustion The advisory has been revoked - it doesn't affect any version of package kernel-headers (opens in a new tab)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-15294578
- published17 Feb 2026
- disclosed14 Feb 2026
Introduced: 14 Feb 2026
CVE-2026-23139 (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:
netfilter: nf_conncount: update last_gc only when GC has been performed
Currently last_gc is being updated everytime a new connection is tracked, that means that it is updated even if a GC wasn't performed. With a sufficiently high packet rate, it is possible to always bypass the GC, causing the list to grow infinitely.
Update the last_gc value only when a GC has been actually performed.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2439874
- https://access.redhat.com/security/cve/CVE-2026-23139
- https://access.redhat.com/errata/RHSA-2026:15883
- https://git.kernel.org/stable/c/26a82dce2beee39c43c109d9647e16f49cb02a35
- https://git.kernel.org/stable/c/2c7c71113ed6d3e2f3aca4c088f22283016ff34f
- https://git.kernel.org/stable/c/3cd717359e56f82f06cbf8279b47a7d79880c6f3
- https://git.kernel.org/stable/c/7811ba452402d58628e68faedf38745b3d485e3c
- https://git.kernel.org/stable/c/8bdafdf4900040a81422056cabe5e00a37bd101a
- https://git.kernel.org/stable/c/9f45588993d7f115280fc726119ca86fba32a811
- https://git.kernel.org/stable/c/c4cde57c8affdcca5bcff53a1047e15d268bdca1