A NULL pointer dereference flaw was found in the btrfs_rm_device function in fs/btrfs/volumes.c in the Linux Kernel where triggering the bug requires ‘CAP_SYS_ADMIN’. This flaw allows a local attacker to crash the system or leak kernel internal information. The highest threat from this vulnerability is to system availability.

...

UBUNTU-CVE-2021-3739

A NULL pointer dereference flaw was found in the btrfsrmdevice function in fs/btrfs/volumes.c in the Linux Kernel, where triggering the bug requires ‘CAPSYSADMIN’. This flaw allows a local attacker to crash the system or leak kernel internal information. The highest threat from this vulnerability...

PT-2021-7359

Name of the Vulnerable Software and Affected Versions Linux Kernel affected versions not specified Description A NULL pointer dereference flaw was found in the btrfs rm device function in fs/btrfs/volumes.c in the Linux Kernel. This flaw allows a local attacker to crash the system or leak kernel...