CVE-2022-49547
CVSS 3.1 Score 5.5 of 10 (medium)
Details
Published Feb 26, 2025
Updated: Mar 10, 2025
CWE ID 667
Summary
CVE-2022-49547 is a vulnerability affecting the Linux kernel's btrfs file system. It results in a deadlock between concurrent direct IO writes when there is insufficient free data space. The issue occurs when two tasks attempt to write to the same file with overlapping ranges, resulting in a deadlock between the tasks, the async data reclaim task, and the task completing ordered extents. The deadlock can lead to a system hang, as demonstrated in the stack trace from the test case generic/300 from fstests.
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Affected Products
- Linux Kernel
Affected Vendors
- LINUX