Race Condition The advisory has been revoked - it doesn't affect any version of package kernel-headers (opens in a new tab)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-15322376
- published20 Feb 2026
- disclosed18 Feb 2026
Introduced: 18 Feb 2026
CVE-2026-23223 (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:
xfs: fix UAF in xchk_btree_check_block_owner
We cannot dereference bs->cur when trying to determine if bs->cur aliases bs->sc->sa.{bno,rmap}_cur after the latter has been freed. Fix this by sampling before type before any freeing could happen. The correct temporal ordering was broken when we removed xfs_btnum_t.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2440674
- https://access.redhat.com/security/cve/CVE-2026-23223
- https://git.kernel.org/stable/c/1c253e11225bc5167217897885b85093e17c2217
- https://git.kernel.org/stable/c/1d411278dda293a507cb794db7d9ed3511c685c6
- https://git.kernel.org/stable/c/ba5264610423d9653aa36920520902d83841bcfd
- https://git.kernel.org/stable/c/ed82e7949f5cac3058f4100f3cd670531d41a266