PT-2022-7628 · Linux+3 · Linux Kernel+3
Published
2022-02-09
·
Updated
2026-03-14
·
CVE-2022-48920
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 vulnerability is related to the btrfs filesystem in the Linux kernel. When using the flushoncommit mount option, a warning is triggered during almost every transaction commit due to the
writeback inodes sb nr() function. This warning can spam dmesg/syslog, causing uncertainty about the reliability of the filesystem. The issue arises from the use of writeback inodes sb() to flush delalloc when committing a transaction, which was introduced to avoid deadlocks with filesystem freeze operations. To fix this, try to writeback inodes sb() should be called instead, which attempts to read-lock sb->s umount before calling writeback inodes sb(). An alternative solution is to call btrfs start delalloc roots() with a number of pages different from LONG MAX.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
Debian
Linux Kernel
Red Os
Suse