CVE-2025-40198

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.

Score

CVSS 3.1 7.8 High

Status

Deferred - 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Published

2025-11-12

Last modified

2026-10-19

Affected products

• Linux Kernel (Linux)

References

• https://git.kernel.org/stable/c/7bf46ff83a0ef11836e38ebd72cdc5107209342d
• https://git.kernel.org/stable/c/b2bac84fde28fb6a88817b8b761abda17a1d300b
• https://git.kernel.org/stable/c/e651294218d2684302ee5ed95ccf381646f3e5b4
• https://git.kernel.org/stable/c/01829af7656b56d83682b3491265d583d502e502
• https://git.kernel.org/stable/c/2a0cf438320cdb783e0378570744c0ef0d83e934
• https://git.kernel.org/stable/c/a6e94557cd05adc82fae0400f6e17745563e5412
• https://git.kernel.org/stable/c/8ecb790ea8c3fc69e77bace57f14cf0d7c177bd8