PT-2026-34360 · Linux · Linux Kernel

Published 2026-04-22 · Updated 2026-06-15 · CVE-2026-31455

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description An issue exists in the XFS file system where the unmount sequence in the xfs unmount flush inodes() function pushes the Active Item List (AIL) while background reclaim and inode garbage collection (inodegc) are still active. This can lead to a race condition where inodegc dirties and inserts inodes into the AIL during the flush, or background reclaim attempts to abort and free dirty inodes.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

CVE-2026-31455

ECHO-FF7C-8BE4-B4E0

SUSE-SU-2026:22099-1

SUSE-SU-2026:22108-1

SUSE-SU-2026:22112-1

SUSE-SU-2026:22127-1

Affected Products

Linux Kernel

References · 279

• https://osv.dev/vulnerability/SUSE-SU-2026:22108-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:22127-1 · Vendor Advisory
• https://git.kernel.org/stable/c/8147e304d7d32fd5c3e943babc296ce2873dc279 · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-31455 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-31455 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-31455 · Vendor Advisory
• https://git.kernel.org/stable/c/e6cc490048f78b009259a5f032acead9f789c34c · Patch
• https://security-tracker.debian.org/tracker/CVE-2026-31455 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:22099-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:22112-1 · Vendor Advisory
• https://git.kernel.org/stable/c/bda27fc0b4eb3a425d9a18475c4cb94fbe862c60 · Patch
• https://git.kernel.org/stable/c/4f24a767e3d64a5f58c595b5c29b6063a201f1e3 · Patch
• https://git.kernel.org/stable/c/558e3275d8a3b101be18a7fe7d1634053e9d9b07 · Patch
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2204-CVE-2026-31455 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-31455 · Security Note