{"id":"CVE-2026-80804","title":"xfs: restore nofs context unconditionally in xfs_trans_roll","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nxfs: restore nofs context unconditionally in xfs_trans_roll\n\nWhen __xfs_trans_commit() fails in xfs_trans_roll(), the NOFS context\nis cleared but only restored in the s…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= a1ca658d649a4d8972e2e21ac2625b633217e327 < b09198cf90ccf296970b774beea1c1ddb260f94c","Linux >= a1ca658d649a4d8972e2e21ac2625b633217e327 < 4d00a39c676274f4071b467e630565ac1e3ae0f2","Linux >= a1ca658d649a4d8972e2e21ac2625b633217e327 < 0241ea5fb0fe86d2a673163b2f5815111aadc7f7","Linux 7.0"],"published":"2026-09-04","updated":"2026-10-19","sourceUpdated":"2026-10-19T08:43:57.464Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-80804","references":[{"url":"https://git.kernel.org/stable/c/b09198cf90ccf296970b774beea1c1ddb260f94c"},{"url":"https://git.kernel.org/stable/c/4d00a39c676274f4071b467e630565ac1e3ae0f2"},{"url":"https://git.kernel.org/stable/c/0241ea5fb0fe86d2a673163b2f5815111aadc7f7"}],"tags":["cve.org"],"epss":0.00206,"epssPercentile":0.09998,"ingestedAt":"2026-10-19T09:16:01.525Z","slug":"CVE-2026-80804","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nxfs: restore nofs context unconditionally in xfs_trans_roll\n\nWhen __xfs_trans_commit() fails in xfs_trans_roll(), the NOFS context\nis cleared but only restored in the success path.  This leaves the\nerror path without nofs protection, causing a circular lock dependency\nbetween xfs_nondir_ilock_class and fs_reclaim:\n\n       CPU0                    CPU1\n       ----                    ----\n  lock(&xfs_nondir_ilock_class);\n                               lock(fs_reclaim);\n                               lock(&xfs_nondir_ilock_class);\n  lock(fs_reclaim);\n\nFix this by moving xfs_trans_set_context() before the error check so\nthat nofs context is always restored on the new transaction.\n\n## Affected\n\n- `Linux >= a1ca658d649a4d8972e2e21ac2625b633217e327 < b09198cf90ccf296970b774beea1c1ddb260f94c`\n- `Linux >= a1ca658d649a4d8972e2e21ac2625b633217e327 < 4d00a39c676274f4071b467e630565ac1e3ae0f2`\n- `Linux >= a1ca658d649a4d8972e2e21ac2625b633217e327 < 0241ea5fb0fe86d2a673163b2f5815111aadc7f7`\n- `Linux 7.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}