CVE-2026-23223 — xfs: fix UAF in xchk_btree_check_block_owner
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->…
Published: 2026-02-18 · CVSS: Unscored
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7