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.
References7
- git.kernel.org/stable/c/01829af7656b56d83682b3491265d583d502e502
- git.kernel.org/stable/c/2a0cf438320cdb783e0378570744c0ef0d83e934
- git.kernel.org/stable/c/7bf46ff83a0ef11836e38ebd72cdc5107209342d
- git.kernel.org/stable/c/8ecb790ea8c3fc69e77bace57f14cf0d7c177bd8
- git.kernel.org/stable/c/a6e94557cd05adc82fae0400f6e17745563e5412
- git.kernel.org/stable/c/b2bac84fde28fb6a88817b8b761abda17a1d300b
- git.kernel.org/stable/c/e651294218d2684302ee5ed95ccf381646f3e5b4
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 6 · as of 10 November 2026
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.