PT-2025-54053 · Btrfs+1 · Btrfs+1
Published
2025-12-30
·
Updated
2026-03-24
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CVE-2023-54224
None
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Name of the Vulnerable Software and Affected Versions
Linux kernel versions prior to 6.5.0-rc7-syzkaller-00024-g93f5de5f648d
Description
The Linux kernel contained a flaw in the Btrfs file system related to delayed inode operations. Specifically, a potential deadlock situation could occur when handling delayed items after a failure during insertion. This issue arises from attempting to release a delayed node's mutex while holding a lock on a subvolume btree, leading to an ABBA-type deadlock. The problem was identified through syzbot testing and manifested as a lock dependency splat. The vulnerability could be triggered during operations like file synchronization.
Recommendations
Update the Linux kernel to version 6.5.0-rc7-syzkaller-00024-g93f5de5f648d or a later version that includes the fix.
Exploit
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Related Identifiers
Affected Products
Btrfs
Linux Kernel