CVE-2026-23223
xfs: fix UAF in xchk_btree_check_block_owner
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Feb 18, 2026 |
| Last Updated | Apr 13, 2026 |
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Affected Versions
Linux / Linux
ec793e690f801d97a7ae2a0d429fea1fee4d44aa < 1d411278dda293a507cb794db7d9ed3511c685c6 ec793e690f801d97a7ae2a0d429fea1fee4d44aa < ed82e7949f5cac3058f4100f3cd670531d41a266 ec793e690f801d97a7ae2a0d429fea1fee4d44aa < ba5264610423d9653aa36920520902d83841bcfd ec793e690f801d97a7ae2a0d429fea1fee4d44aa < 1c253e11225bc5167217897885b85093e17c2217
Linux / Linux
6.9
References
git.kernel.org: https://git.kernel.org/stable/c/1d411278dda293a507cb794db7d9ed3511c685c6 git.kernel.org: https://git.kernel.org/stable/c/ed82e7949f5cac3058f4100f3cd670531d41a266 git.kernel.org: https://git.kernel.org/stable/c/ba5264610423d9653aa36920520902d83841bcfd git.kernel.org: https://git.kernel.org/stable/c/1c253e11225bc5167217897885b85093e17c2217