PT-2024-3351 · Linux+9 · Linux Kernel+9
Wei Chen
+1
·
Published
2024-01-18
·
Updated
2025-09-29
·
CVE-2024-26704
CVSS v3.1
7.8
High
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The issue is related to a double-free vulnerability in the ext4 file system, specifically in the
ext4 move extents() function. This vulnerability can cause a denial of service when the trim command is executed, due to a zero-division bug triggered in mb update avg fragment size(). The problem arises when the moved len variable is not updated after successfully moving some extents, leading to the freeing of overlapped extents twice in ext4 mb release inode pa() and ext4 process freed data(). This results in bb free being incremented twice, causing the zero-division bug when trim is executed.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Double Free
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Weakness Enumeration
Related Identifiers
Affected Products
Almalinux
Astra Linux
Centos
Linuxmint
Linux Kernel
Red Hat
Red Os
Rocky Linux
Suse
Ubuntu