PT-2026-26111 · Btrfs+3 · Btrfs+3

CVE-2025-71268

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Published

2025-01-01

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Updated

2026-08-23

CVSS v3.1

7.5

High

VectorAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)
Description A flaw exists in the Linux kernel related to a reservation leak within the btrfs file system when inserting inline extents. Specifically, if allocation of a path or joining a transaction fails during the cow file range inline() function, reserved qgroup data is not freed, leading to a memory leak. The issue is addressed by ensuring the btrfs qgroup free data() function is called in these error scenarios.
Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Missing Release of Resource after Effective Lifetime

Memory Leak

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Weakness Enumeration

Related Identifiers

BDU:2026-04244
CVE-2025-71268
OPENSUSE-SU-2026:20826-1
SUSE-SU-2026:1573-1
SUSE-SU-2026:1661-1
SUSE-SU-2026:1668-1
SUSE-SU-2026:21114-1
SUSE-SU-2026:21123-1
SUSE-SU-2026:21255-1
SUSE-SU-2026:21834-1
SUSE-SU-2026:21841-1
SUSE-SU-2026:21845-1
SUSE-SU-2026:21860-1
USN-8278-1
USN-8278-2
USN-8289-1
USN-8289-2
USN-8296-1
USN-8296-2
USN-8393-1
USN-8440-1
USN-8499-1

Affected Products

Linuxmint
Linux Kernel
Ubuntu
Btrfs