PT-2026-5994 · Linux+3 · Linux Kernel+3
Published
2025-01-01
·
Updated
2026-05-22
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CVE-2025-71194
None
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Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The Linux kernel contains a flaw in the btrfs subsystem related to transaction handling. Specifically, the
wait current trans() function does not properly consider transaction types when waiting for blocked transactions, potentially leading to a deadlock. This can occur when a worker processing an ordered extent calls start transaction() with TRANS JOIN while another transaction is in the TRANS STATE COMMIT DOING state. The issue arises because the check against the btrfs blocked trans types[] array is missing in wait current trans(). The deadlock involves two transactions and pending ordered extents, where each transaction waits for the other, causing a system stall. The call stacks provided illustrate the sequence of events leading to the deadlock, involving functions like btrfs finish ordered io(), start transaction(), join transaction(), wait current trans(), and btrfs commit transaction().Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
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Related Identifiers
Affected Products
Linuxmint
Linux Kernel
Ubuntu
Btrfs