High 7.8Published Apr 22, 2026

CVE-2026-31455xfs: stop reclaim before pushing AIL during unmount

Updated under an hour ago (Oct 26, 2026, 3:40 AM ET)

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Exploited in the last 30 days

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.

CVSS: 7.8 HIGH (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Analyzed
Record last updated: May 11, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 90c60e16401248a4900f3f9387f563d0178dcf34 before e6cc490048f78b009259a5f032acead9f789c34c; from 90c60e16401248a4900f3f9387f563d0178dcf34 before 239d734c00644072862fa833805c4471573b1445; from 90c60e16401248a4900f3f9387f563d0178dcf34 before bda27fc0b4eb3a425d9a18475c4cb94fbe862c60; from 90c60e16401248a4900f3f9387f563d0178dcf34 before d38135af04a3ad8a585c899d176efc8e97853115; from 90c60e16401248a4900f3f9387f563d0178dcf34 before a89434a6188d8430ea31120da96e3e4cefb58686; from 90c60e16401248a4900f3f9387f563d0178dcf34 before 8147e304d7d32fd5c3e943babc296ce2873dc279; from 90c60e16401248a4900f3f9387f563d0178dcf34 before 558e3275d8a3b101be18a7fe7d1634053e9d9b07; 90c60e16401248a4900f3f9387f563d0178dcf34 builds before 4f24a767e3d64a5f58c595b5c29b6063a201f1e3	CNA record
linux linux_kernel linux:linux_kernel	from 5.9 before 5.10.253; from 5.11 before 5.15.203; from 5.16 before 6.1.168; from 6.2 before 6.6.131; from 6.7 before 6.12.80; from 6.13 before 6.18.21; from 6.19 before 6.19.11; 7.0; and 5 more ranges	NVD

References

https://git.kernel.org/stable/c/e6cc490048f78b009259a5f032acead9f789c34cpatch
https://git.kernel.org/stable/c/239d734c00644072862fa833805c4471573b1445patch
https://git.kernel.org/stable/c/bda27fc0b4eb3a425d9a18475c4cb94fbe862c60patch
https://git.kernel.org/stable/c/d38135af04a3ad8a585c899d176efc8e97853115patch
https://git.kernel.org/stable/c/a89434a6188d8430ea31120da96e3e4cefb58686patch
https://git.kernel.org/stable/c/8147e304d7d32fd5c3e943babc296ce2873dc279patch
https://git.kernel.org/stable/c/558e3275d8a3b101be18a7fe7d1634053e9d9b07patch
https://git.kernel.org/stable/c/4f24a767e3d64a5f58c595b5c29b6063a201f1e3patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.