CVE-2023-53149

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

Description The Linux kernel contains a flaw in the ext4 filesystem implementation that can lead to a deadlock during filesystem reclaim with page writeback. This occurs because the filesystem-wide lock intended to prevent races with journalled data flag switching or inode format changes can cause a deadlock when combined with specific operations during writeback. The deadlock arises when a process attempts to acquire the writepages read-write semaphore (sbi->s writepages rwsem) while another process holds a write lock on the same semaphore, blocking all readers. This can occur when ext4 writepages() is called during filesystem reclaim, potentially blocking indefinitely.

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