CVE-2021-47113

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

Description The issue occurs in the btrfs file system when a rename exchange operation fails to insert the second inode reference, resulting in a dangling inode reference and potential file system corruption. This happens because the inode reference for one side of the rename is inserted first, and if the insertion of the second inode reference fails, the first one is left dangling. The problem was uncovered through error injection stress testing. The fix involves aborting the operation if the insertion of the first inode reference is successful.

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