CVE-2025-40198

Linux Kernel - Buffer Over-Read in ext4 parse_apply_sb_mount_options

Title source: llm
STIX 2.1

Description

In the Linux kernel, the following vulnerability has been resolved: ext4: avoid potential buffer over-read in parse_apply_sb_mount_options() Unlike other strings in the ext4 superblock, we rely on tune2fs to make sure s_mount_opts is NUL terminated. Harden parse_apply_sb_mount_options() by treating s_mount_opts as a potential __nonstring.

References (7)

Core 7

Scores

EPSS 0.0019
EPSS Percentile 8.6%

Details

Status published
Products (22)
linux/Kernel 2.6.36 - 5.4.301linux
linux/Kernel 5.11.0 - 6.1.158linux
linux/Kernel 5.5.0 - 5.10.246linux
linux/Kernel 6.13.0 - 6.17.4linux
linux/Kernel 6.2.0 - 6.6.114linux
linux/Kernel 6.7.0 - 6.12.54linux
Linux/Linux < 2.6.36
Linux/Linux 2.6.36
Linux/Linux 5.10.246 - 5.10.*
Linux/Linux 5.4.301 - 5.4.*
... and 12 more
Published Nov 12, 2025
Tracked Since Feb 18, 2026