PT-2024-32156 · Linux+7 · Linux Kernel+7
Published
2024-08-01
·
Updated
2026-05-26
·
CVE-2024-46733
CVSS v3.1
5.5
Medium
| Vector | 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 issue is related to a qgroup reserve leak in the cow file range function of the btrfs filesystem. In the buffered write path, the dirty page owns the qgroup reserve until it creates an ordered extent. If any errors occur before the ordered extent is created, the reservation must be freed to prevent space leakage. The fstest generic/475 test exercises various IO error paths and can trigger errors in cow file range, leading to failures at the unmount stage. The error messages include BTRFS error (device dm-8 state EA) in cleanup transaction and btrfs replace file extents, as well as a warning about unreleased space in qgroup 0/5.
Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Improper Locking
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Astra Linux
Debian
Linuxmint
Linux Kernel
Suse
Ubuntu
Btrfs