CVE-2026-31455
xfs: stop reclaim before pushing AIL during unmount
In the Linux kernel, the following vulnerability has been resolved: xfs: stop reclaim before pushing AIL during unmount The unmount sequence in xfs_unmount_flush_inodes() pushed the AIL while background reclaim and inodegc are still running. This is broken independently of any use-after-free issues - background reclaim and inodegc should not be running while the AIL is being pushed during unmount, as inodegc can dirty and insert inodes into the AIL during the flush, and background reclaim can race to abort and free dirty inodes. Reorder xfs_unmount_flush_inodes() to stop inodegc and cancel background reclaim before pushing the AIL. Stop inodegc before cancelling m_reclaim_work because the inodegc worker can re-queue m_reclaim_work via xfs_inodegc_set_reclaimable.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| Linux Linux |
≥ 90c60e16401248a4900f3f9387f563d0178dcf34; < e6cc490048f78b009259a5f032acead9f789c34c (affected, git) ≥ 90c60e16401248a4900f3f9387f563d0178dcf34; < 239d734c00644072862fa833805c4471573b1445 (affected, git) ≥ 90c60e16401248a4900f3f9387f563d0178dcf34; < bda27fc0b4eb3a425d9a18475c4cb94fbe862c60 (affected, git) ≥ 90c60e16401248a4900f3f9387f563d0178dcf34; < d38135af04a3ad8a585c899d176efc8e97853115 (affected, git) ≥ 90c60e16401248a4900f3f9387f563d0178dcf34; < a89434a6188d8430ea31120da96e3e4cefb58686 (affected, git) ≥ 90c60e16401248a4900f3f9387f563d0178dcf34; < 8147e304d7d32fd5c3e943babc296ce2873dc279 (affected, git) ≥ 90c60e16401248a4900f3f9387f563d0178dcf34; < 558e3275d8a3b101be18a7fe7d1634053e9d9b07 (affected, git) ≥ 90c60e16401248a4900f3f9387f563d0178dcf34; < 4f24a767e3d64a5f58c595b5c29b6063a201f1e3 (affected, git) Other versions: unaffected |
CNA: Linux |
| Linux Linux |
5.9 (affected) ≥ 0; < 5.9 (unaffected, semver) ≥ 5.10.253; ≤ 5.10.* (unaffected, semver) ≥ 5.15.203; ≤ 5.15.* (unaffected, semver) ≥ 6.1.168; ≤ 6.1.* (unaffected, semver) ≥ 6.6.131; ≤ 6.6.* (unaffected, semver) ≥ 6.12.80; ≤ 6.12.* (unaffected, semver) ≥ 6.18.21; ≤ 6.18.* (unaffected, semver) ≥ 6.19.11; ≤ 6.19.* (unaffected, semver) ≥ 7.0; ≤ * (unaffected, original_commit_for_fix) Other versions: affected |
CNA: Linux |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
No CVSS assessment reported. An unscored record is not a low-severity determination.
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://git.kernel.org/stable/c/e6cc490048f78b009259a5f032acead9f789c34cCNA: Linux
- https://git.kernel.org/stable/c/239d734c00644072862fa833805c4471573b1445CNA: Linux
- https://git.kernel.org/stable/c/bda27fc0b4eb3a425d9a18475c4cb94fbe862c60CNA: Linux
- https://git.kernel.org/stable/c/d38135af04a3ad8a585c899d176efc8e97853115CNA: Linux
- https://git.kernel.org/stable/c/a89434a6188d8430ea31120da96e3e4cefb58686CNA: Linux
- https://git.kernel.org/stable/c/8147e304d7d32fd5c3e943babc296ce2873dc279CNA: Linux
- https://git.kernel.org/stable/c/558e3275d8a3b101be18a7fe7d1634053e9d9b07CNA: Linux
- https://git.kernel.org/stable/c/4f24a767e3d64a5f58c595b5c29b6063a201f1e3CNA: Linux
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