CVE-2024-50191

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

Description: A vulnerability in the Linux kernel has been resolved, related to the ext4 filesystem. When the filesystem is mounted with errors=remount-ro, the code previously set the SB RDONLY flag to stop all filesystem modifications. However, this approach missed proper locking and did not follow the proper filesystem remount procedure. The issue was triggered by syzbot, which found a way to cause warnings in filesystem freezing due to the SB RDONLY flag changing. The fix involves stopping the modification of SB RDONLY, as setting EXT4 FLAGS SHUTDOWN on the superblock is sufficient to stop all filesystem modifications.

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