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CVE PROGRAM SOURCE RECORDUnscored

CVE-2026-23223

xfs: fix UAF in xchk_btree_check_block_owner

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 products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • ec793e690f801d97a7ae2a0d429fea1fee4d44aa to < 1d411278dda293a507cb794db7d9ed3511c685c6affected
  • ec793e690f801d97a7ae2a0d429fea1fee4d44aa to < ed82e7949f5cac3058f4100f3cd670531d41a266affected
  • ec793e690f801d97a7ae2a0d429fea1fee4d44aa to < ba5264610423d9653aa36920520902d83841bcfdaffected
  • ec793e690f801d97a7ae2a0d429fea1fee4d44aa to < 1c253e11225bc5167217897885b85093e17c2217affected

Linux Linux

Default version status: affected

  • 6.9affected
  • 0 to < 6.9unaffected
  • 6.12.72 to ≤ 6.12.*unaffected
  • 6.18.11 to ≤ 6.18.*unaffected
  • 6.19.1 to ≤ 6.19.*unaffected
  • 7.0 to ≤ *unaffected

References