Vulnerability CVE-2024-42295
Published: 2024-08-17

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

nilfs2: handle inconsistent state in nilfs_btnode_create_block()

Syzbot reported that a buffer state inconsistency was detected in
nilfs_btnode_create_block(), triggering a kernel bug.

It is not appropriate to treat this inconsistency as a bug; it can occur
if the argument block address (the buffer index of the newly created
block) is a virtual block number and has been reallocated due to
corruption of the bitmap used to manage its allocation state.

So, modify nilfs_btnode_create_block() and its callers to treat it as a
possible filesystem error, rather than triggering a kernel bug.

 References:
https://git.kernel.org/stable/c/012be828a118bf496e666ef1fc47fc0e7358ada2
https://git.kernel.org/stable/c/be56dfc9be0604291267c07b0e27a69a6bda4899
https://git.kernel.org/stable/c/366c3f688dd0288cbe38af1d3a886b5c62372e4a
https://git.kernel.org/stable/c/4811f7af6090e8f5a398fbdd766f903ef6c0d787
Copyright 2026, cxsecurity.com

 

Back to Top