CVE-2022-50344

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A null-pointer dereference issue was identified in the ext4 filesystem within the Linux kernel. The vulnerability occurs during the ext4 write info function, potentially triggered during filesystem unmounting (umount) and related operations like dquot writeback dquots, ext4 sync fs, and generic shutdown super. The root cause involves a null pointer being dereferenced when accessing the inode of the root directory (s root) after it has been set to NULL during the unmount process. The call trace indicates the issue originates from exit to user mode prepare and propagates through filesystem shutdown routines.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.