CVE-2026-31455

HIGH EPSS 2.6%
Published Apr 22, 20262mo ago · Modified Jun 17, 20261w ago
7.8 CVSS 3.1
High
Find Similar
Published Apr 22, 2026 2mo ago
Last Modified Jun 17, 2026 1w ago

Description

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 Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
2.6% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-416 Use After Free Memory Safety

Affected Products 13

VendorProductVersionRange
linuxlinux_kernel*≥5.9  –  <5.10.253
linuxlinux_kernel*≥5.11  –  <5.15.203
linuxlinux_kernel*≥5.16  –  <6.1.168
linuxlinux_kernel*≥6.2  –  <6.6.131
linuxlinux_kernel*≥6.7  –  <6.12.80
linuxlinux_kernel*≥6.13  –  <6.18.21
linuxlinux_kernel*≥6.19  –  <6.19.11
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any

References 8

  • git.kernel.org https://git.kernel.org/stable/c/239d734c00644072862fa833805c4471573b1445
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4f24a767e3d64a5f58c595b5c29b6063a201f1e3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/558e3275d8a3b101be18a7fe7d1634053e9d9b07
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8147e304d7d32fd5c3e943babc296ce2873dc279
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a89434a6188d8430ea31120da96e3e4cefb58686
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/bda27fc0b4eb3a425d9a18475c4cb94fbe862c60
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d38135af04a3ad8a585c899d176efc8e97853115
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e6cc490048f78b009259a5f032acead9f789c34c
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/239d734c00644072862fa833805c4471573b1445
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4f24a767e3d64a5f58c595b5c29b6063a201f1e3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/558e3275d8a3b101be18a7fe7d1634053e9d9b07
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8147e304d7d32fd5c3e943babc296ce2873dc279
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a89434a6188d8430ea31120da96e3e4cefb58686
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/bda27fc0b4eb3a425d9a18475c4cb94fbe862c60
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d38135af04a3ad8a585c899d176efc8e97853115
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e6cc490048f78b009259a5f032acead9f789c34c
    Patch