PT-2026-5521 · Btrfs+1 · Btrfs+1
Publicado
2026-01-01
·
Atualizado
2026-03-25
·
CVE-2026-23018
CVSS v3.1
5.5
Média
| Vetor | AV:L/AC:L/PR:L/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
The Linux kernel contained a flaw in the btrfs subsystem where the path was released before the extent tree was initialized within the
btrfs read locked inode() function. This could lead to a circular lock dependency, triggering a lockdep warning. The issue arises when calling btrfs init file extent tree() while holding a read-locked leaf from a subvolume tree, potentially causing a GFP KERNEL allocation and triggering reclaim. This circular dependency was observed during file system synchronization and inode eviction processes.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Allocation of Resources Without Limits
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Enumeração de Fraquezas
Identificadores relacionados
Produtos afetados
Linux Kernel
Btrfs