CVE-2022-49831 Information

Description

In the Linux kernel the following vulnerability has been resolved:

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

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.

Reference

https://git.kernel.org/stable/c/544f38a738343d7e75f104e5e9d1ade58d8b71bd https://git.kernel.org/stable/c/91c38504e589dadbcde47b1cacdfc5b684154d44 https://git.kernel.org/stable/c/a8d1b1647bf8244a5f270538e9e636e2657fffa3