FKIE_CVE-2026-31556

Vulnerability from fkie_nvd - Published: 2026-04-24 15:16 - Updated: 2026-04-24 17:51
Severity ?
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/268378b6ad20569af0d1957992de1c8b16c6e900
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3b0c3414b308e6822cda90bf99f7eac94d4cca2b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d128fc0c5c2b19224927d4fd2a46c2fe6a1f606f
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e822f535273af0e8968eab7acc0cea0b90dd25af
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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfs: scrub: unlock dquot before early return in quota scrub\n\nxchk_quota_item can return early after calling xchk_fblock_process_error.\nWhen that helper returns false, the function returned immediately without\ndropping dq-\u003eq_qlock, which can leave the dquot lock held and risk lock\nleaks or deadlocks in later quota operations.\n\nFix this by unlocking dq-\u003eq_qlock before the early return."
    }
  ],
  "id": "CVE-2026-31556",
  "lastModified": "2026-04-24T17:51:40.810",
  "metrics": {},
  "published": "2026-04-24T15:16:29.977",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/268378b6ad20569af0d1957992de1c8b16c6e900"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/3b0c3414b308e6822cda90bf99f7eac94d4cca2b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d128fc0c5c2b19224927d4fd2a46c2fe6a1f606f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e822f535273af0e8968eab7acc0cea0b90dd25af"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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