CVE-2026-23223

CVE-2026-23223CVE-2026-23223

linux / linux_kernel

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.

Scoring

CVSS 7.8 ()
VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Last modified2026-11-05
Sourced from NVD. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.