cve/2024/CVE-2024-26601.md

CVE-2024-26601

Description

In the Linux kernel, the following vulnerability has been resolved:ext4: regenerate buddy after block freeing failed if under fc replayThis mostly reverts commit 6bd97bf273bd ("ext4: remove redundantmb_regenerate_buddy()") and reintroduces mb_regenerate_buddy(). Based oncode in mb_free_blocks(), fast commit replay can end up marking as freeblocks that are already marked as such. This causes corruption of thebuddy bitmap so we need to regenerate it in that case.

POC

Reference

No PoCs from references.

Github

• https://github.com/fkie-cad/nvd-json-data-feeds