PT-2025-51674 · Linux+4 · Linux Kernel+4
Published
2025-11-26
·
Updated
2026-05-26
·
CVE-2025-68261
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 implementation. Specifically, a race condition exists between inline data destruction and block mapping within the
ext4 destroy inline data nolock() function. This occurs when the function modifies inode data layout while another thread is executing ext4 map blocks(), potentially leading to an assertion failure and a kernel bug. The issue arises from a lack of i data sem protection, allowing ext4 ind map blocks() to receive an inode with the EXT4 INODE EXTENTS flag set, triggering the assertion. The vulnerability can be triggered during file operations such as sendfile.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Buffer Overflow
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Weakness Enumeration
Related Identifiers
Affected Products
Debian
Linuxmint
Linux Kernel
Ubuntu
Ext4