{"cve":"CVE-2026-31455","nvd":{"published":"2026-04-22T14:16:40.013","modified":"2026-06-17T10:33:46.523","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nxfs: stop reclaim before pushing AIL during unmount\n\nThe unmount sequence in xfs_unmount_flush_inodes() pushed the AIL while\nbackground reclaim and inodegc are still running. This is broken\nindependently of any use-after-free issues - background reclaim and\ninodegc should not be running while the AIL is being pushed during\nunmount, as inodegc can dirty and insert inodes into the AIL during the\nflush, and background reclaim can race to abort and free dirty inodes.\n\nReorder xfs_unmount_flush_inodes() to stop inodegc and cancel background\nreclaim before pushing the AIL. Stop inodegc before cancelling\nm_reclaim_work because the inodegc worker can re-queue m_reclaim_work\nvia xfs_inodegc_set_reclaimable.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8},"cwes":["CWE-416"],"references":["https://git.kernel.org/stable/c/239d734c00644072862fa833805c4471573b1445","https://git.kernel.org/stable/c/4f24a767e3d64a5f58c595b5c29b6063a201f1e3","https://git.kernel.org/stable/c/558e3275d8a3b101be18a7fe7d1634053e9d9b07","https://git.kernel.org/stable/c/8147e304d7d32fd5c3e943babc296ce2873dc279","https://git.kernel.org/stable/c/a89434a6188d8430ea31120da96e3e4cefb58686"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:30:49.762551342+00:00"},"epss":{"cve":"CVE-2026-31455","score":0.00126,"percentile":0.02231,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}