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Description

In the Linux kernel, the following vulnerability has been resolved: xfs: scrub: unlock dquot before early return in quota scrub xchk_quota_item can return early after calling xchk_fblock_process_error. When that helper returns false, the function returned immediately without dropping dq->q_qlock, which can leave the dquot lock held and risk lock leaks or deadlocks in later quota operations. Fix this by unlocking dq->q_qlock before the early return.

PUBLISHED Reserved 2026-03-09 | Published 2026-04-24 | Updated 2026-04-24 | Assigner Linux

Product status

Default status
unaffected

7d1f0e167a067ed741dec08b7614d76893422b04 (git) before e822f535273af0e8968eab7acc0cea0b90dd25af
affected

7d1f0e167a067ed741dec08b7614d76893422b04 (git) before 3b0c3414b308e6822cda90bf99f7eac94d4cca2b
affected

7d1f0e167a067ed741dec08b7614d76893422b04 (git) before d128fc0c5c2b19224927d4fd2a46c2fe6a1f606f
affected

7d1f0e167a067ed741dec08b7614d76893422b04 (git) before 268378b6ad20569af0d1957992de1c8b16c6e900
affected

Default status
affected

6.8
affected

Any version before 6.8
unaffected

6.12.80 (semver)
unaffected

6.18.21 (semver)
unaffected

6.19.11 (semver)
unaffected

7.0 (original_commit_for_fix)
unaffected

References

git.kernel.org/...c/e822f535273af0e8968eab7acc0cea0b90dd25af

git.kernel.org/...c/3b0c3414b308e6822cda90bf99f7eac94d4cca2b

git.kernel.org/...c/d128fc0c5c2b19224927d4fd2a46c2fe6a1f606f

git.kernel.org/...c/268378b6ad20569af0d1957992de1c8b16c6e900

cve.org (CVE-2026-31556)

nvd.nist.gov (CVE-2026-31556)

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