kernel: ext4: fix bug_on in __es_tree_search caused by bad boot loader inode

A flaw was identified in the ext4 filesystem implementation in the Linux kernel where a malformed or improperly initialized boot loader inode could trigger a BUGON condition inside the estreesearch function. This occurs when the inode’s mode imode is an unexpected type and the code does not...

kernel: ext4: add EXT4_IGET_BAD flag to prevent unexpected bad inode

In the Linux kernel, the following vulnerability has been resolved: ext4: add EXT4IGETBAD flag to prevent unexpected bad inode There are many places that will get unhappy and crash when ext4iget returns a bad inode. However, if iget the boot loader inode, allows a bad inode to be returned, becaus...

GSD-2023-1001527 ext4: fix bug_on in __es_tree_search caused by bad boot loader inode

ext4: fix bugon in estreesearch caused by bad boot loader inode This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v4.9.337 by commit...

PT-2025-49618

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 6.0.0-next-20221007-dirty 349 Description A flaw exists in the Linux kernel related to the handling of boot loader inodes. Specifically, a bug in the es tree search function within the ext4 filesystem can occur...