PT-2026-43728 · Linux+2 · Linux Kernel+2

CVE-2026-45861

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Published

2025-12-14

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Updated

2026-08-19

CVSS v3.1

9.8

Critical

VectorAV:N/AC:L/PR:N/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 A slab-use-after-free issue exists in the gfs2 component. During filesystem shutdown, quota data objects were freed synchronously without being removed from the Least Recently Used (LRU) list, leading to LRU list corruption. This results in a use-after-free condition when the shrinker function gfs2 qd shrink scan() attempts to access objects that have already been freed. The issue is triggered within the qd put() function.
Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Use After Free

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Weakness Enumeration

Related Identifiers

AZL-88524
BDU:2026-12189
CVE-2026-45861
OESA-2026-2582
OESA-2026-3157
OPENSUSE-SU-2026:21388-1
SUSE-SU-2026:22742-1
SUSE-SU-2026:22769-1
SUSE-SU-2026:22812-1
SUSE-SU-2026:22835-1
USN-8492-1
USN-8492-2
USN-8492-3
USN-8492-4
USN-8492-5
USN-8497-1
USN-8498-1
USN-8499-1
USN-8606-1
USN-8607-1
USN-8609-1
USN-8619-1

Affected Products

Linuxmint
Linux Kernel
Ubuntu