CVE-2026-31556 (GCVE-0-2026-31556)

Vulnerability from cvelistv5 – Published: 2026-04-24 14:35 – Updated: 2026-05-11 22:11
VLAI
Title
xfs: scrub: unlock dquot before early return in quota scrub
Summary
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.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 7d1f0e167a067ed741dec08b7614d76893422b04 , < e822f535273af0e8968eab7acc0cea0b90dd25af (git)
Affected: 7d1f0e167a067ed741dec08b7614d76893422b04 , < 3b0c3414b308e6822cda90bf99f7eac94d4cca2b (git)
Affected: 7d1f0e167a067ed741dec08b7614d76893422b04 , < d128fc0c5c2b19224927d4fd2a46c2fe6a1f606f (git)
Affected: 7d1f0e167a067ed741dec08b7614d76893422b04 , < 268378b6ad20569af0d1957992de1c8b16c6e900 (git)
guessed Create a notification for this product.
Linux Linux Affected: 6.8
Unaffected: 0 , < 6.8 (semver)
Unaffected: 6.12.80 , ≤ 6.12.* (semver)
Unaffected: 6.18.21 , ≤ 6.18.* (semver)
Unaffected: 6.19.11 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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      "current_release_date": "2026-06-28T07:26:26+00:00",
      "cve": "CVE-2026-31556",
      "id": "CVE-2026-31556",
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      "title": "kernel: xfs: scrub: unlock dquot before early return in quota scrub",
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      "id": "CVE-2026-31556",
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      "title": "SUSE CVE CVE-2026-31556",
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}



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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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