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CVE-2026-23223

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CVE-2026-23223

Published: Feb 18, 2026

Modified: May 11, 2026

PUBLISHED

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.

VendorProductVersions

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.*

+1 more versions

References

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