CVEvulnerability
CVE-2026-23223
7.8 HIGH
Official page ↗
- Status
- Analyzed
- Published
- 2026-02-18
- Last modified
- 2026-06-17
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 ([email protected])
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-416
Description
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.
Affected configurations
• linux linux kernel (>= 6.9 < 6.12.72)
• linux linux kernel (>= 6.13 < 6.18.11)
• linux linux kernel (>= 6.19 < 6.19.1)
Related
Weakness · CWE (1)
- CWE-416 Use After Free weakness
References
- https://git.kernel.org/stable/c/1c253e11225bc5167217897885b85093e17c2217 Patch
- https://git.kernel.org/stable/c/1d411278dda293a507cb794db7d9ed3511c685c6 Patch
- https://git.kernel.org/stable/c/ba5264610423d9653aa36920520902d83841bcfd Patch
- https://git.kernel.org/stable/c/ed82e7949f5cac3058f4100f3cd670531d41a266 Patch