Unrated severityNVD Advisory· Published May 1, 2025· Updated Dec 23, 2025

btrfs: zoned: initialize device's zone info for seeding

CVE-2022-49831

Description

In the Linux kernel, the following vulnerability has been resolved:

When performing seeding on a zoned filesystem it is necessary to initialize each zoned device's btrfs_zoned_device_info structure, otherwise mounting the filesystem will cause a NULL pointer dereference.

This was uncovered by fstests' testcase btrfs/163.

Affected products

btrfs/btrfsllm-fuzzy
Linux/Kernelcpe-rescue
Range: 5.12

Patches

Vulnerability mechanics

References

git.kernel.org/stable/c/544f38a738343d7e75f104e5e9d1ade58d8b71bdmitre
git.kernel.org/stable/c/91c38504e589dadbcde47b1cacdfc5b684154d44mitre
git.kernel.org/stable/c/a8d1b1647bf8244a5f270538e9e636e2657fffa3mitre

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