CVE-2026-31556: Linux

Описание

Оригинално описание

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.

Засегнати продукти

• Linux Linux: 7d1f0e167a067ed741dec08b7614d76893422b04 преди e822f535273af0e8968eab7acc0cea0b90dd25af; 7d1f0e167a067ed741dec08b7614d76893422b04 преди 3b0c3414b308e6822cda90bf99f7eac94d4cca2b; 7d1f0e167a067ed741dec08b7614d76893422b04 преди d128fc0c5c2b19224927d4fd2a46c2fe6a1f606f; 7d1f0e167a067ed741dec08b7614d76893422b04 преди 268378b6ad20569af0d1957992de1c8b16c6e900
• Linux Linux: 6.8; преди 6.8; 6.12.80 до 6.12.*; 6.18.21 до 6.18.*; 6.19.11 до 6.19.*; от 7.0 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99265
• CVE-2026-99261
• CVE-2026-99260

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-31556
• https://nvd.nist.gov/vuln/detail/CVE-2026-31556
• https://git.kernel.org/stable/c/e822f535273af0e8968eab7acc0cea0b90dd25af
• https://git.kernel.org/stable/c/3b0c3414b308e6822cda90bf99f7eac94d4cca2b
• https://git.kernel.org/stable/c/d128fc0c5c2b19224927d4fd2a46c2fe6a1f606f
• https://git.kernel.org/stable/c/268378b6ad20569af0d1957992de1c8b16c6e900