PT-2025-46642 · Linux+4 · Linux Kernel+4
Published
2025-10-10
·
Updated
2026-05-07
·
CVE-2025-40167
CVSS v2.0
4.6
Medium
| Vector | AV:L/AC:L/Au:S/C:N/I:N/A:C |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The Linux kernel contains a flaw in the ext4 filesystem handling. Specifically, an invalid combination of the INLINE DATA and EXTENTS flags within an inode can lead to a BUG ON condition in the
ext4 es cache extent() function when opening a verity file on a corrupted ext4 filesystem without a journal. This occurs because the presence of both flags bypasses extent tree validation in ext4 iget(), resulting in out-of-order extents and an integer underflow during hole size calculation. The issue was identified by syzbot.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
RCE
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Weakness Enumeration
Related Identifiers
Affected Products
Debian
Linuxmint
Linux Kernel
Ubuntu
Ext4