VYPR
← All advisories
Unrated severityNVD Advisory· Published Oct 4, 2025· Updated Dec 23, 2025

ext4: add EXT4_IGET_BAD flag to prevent unexpected bad inode

CVE-2022-50485

Description

In the Linux kernel, the following vulnerability has been resolved:

ext4: add EXT4_IGET_BAD flag to prevent unexpected bad inode

There are many places that will get unhappy (and crash) when ext4_iget() returns a bad inode. However, if iget the boot loader inode, allows a bad inode to be returned, because the inode may not be initialized. This mechanism can be used to bypass some checks and cause panic. To solve this problem, we add a special iget flag EXT4_IGET_BAD. Only with this flag we'd be returning bad inode from ext4_iget(), otherwise we always return the error code if the inode is bad inode.(suggested by Jan Kara)

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

93

Patches

Vulnerability mechanics

References

6

News mentions

0

No linked articles in our index yet.