xfs: fix UAF in xchk_btree_check_block_owner (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.14 % · percentile 3 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Analyzed
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.
Weaknesses (CWE)
- CWE-416 — Use After Free
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2026-7678
- GCVE · GCVE-0-2026-23223
CERT-FR advisories
- CERTFR-2026-AVI-0215 — Multiples vulnérabilités dans les produits Microsoft · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0192 — Multiples vulnérabilités dans le noyau Linux de Debian · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.9 < 6.12.72cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.13 < 6.18.11cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.19 < 6.19.1
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected ec793e690f801d97a7ae2a0d429fea1fee4d44aa < 1d411278dda293a507cb794db7d9ed3511c685c6 ; affected ec793e690f801d97a7ae2a0d429fea1fee4d44aa < ed82e7949f5cac3058f4100f3cd670531d41a266 ; affected ec793e690f801d97a7ae2a0d429fea1fee4d44aa < ba5264610423d9653aa36920520902d83841bcfd ; affected ec793e690f801d97a7ae2a0d429fea1fee4d44aa < 1c253e11225bc5167217897885b85093e17c2217 |
| Linux · Linux | affected 6.9 ; unaffected 0 < 6.9 ; unaffected 6.12.72 ≤ 6.12.* ; unaffected 6.18.11 ≤ 6.18.* ; unaffected 6.19.1 ≤ 6.19.* ; unaffected 7.0 ≤ * |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |