CVE-2025-40198

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux8b67f04ab9de5d8f3a71aef72bf02c995a506db5 < 7bf46ff83a0ef11836e38ebd72cdc5107209342daffected
LinuxLinux8b67f04ab9de5d8f3a71aef72bf02c995a506db5 < b2bac84fde28fb6a88817b8b761abda17a1d300baffected
LinuxLinux8b67f04ab9de5d8f3a71aef72bf02c995a506db5 < e651294218d2684302ee5ed95ccf381646f3e5b4affected
LinuxLinux8b67f04ab9de5d8f3a71aef72bf02c995a506db5 < 01829af7656b56d83682b3491265d583d502e502affected
LinuxLinux8b67f04ab9de5d8f3a71aef72bf02c995a506db5 < 2a0cf438320cdb783e0378570744c0ef0d83e934affected
LinuxLinux8b67f04ab9de5d8f3a71aef72bf02c995a506db5 < a6e94557cd05adc82fae0400f6e17745563e5412affected
LinuxLinux8b67f04ab9de5d8f3a71aef72bf02c995a506db5 < 8ecb790ea8c3fc69e77bace57f14cf0d7c177bd8affected
LinuxLinux2.6.36affected
LinuxLinux0 < 2.6.36unaffected
LinuxLinux5.4.301 <= 5.4.*unaffected
LinuxLinux5.10.246 <= 5.10.*unaffected
LinuxLinux6.1.158 <= 6.1.*unaffected
LinuxLinux6.6.114 <= 6.6.*unaffected
LinuxLinux6.12.54 <= 6.12.*unaffected
LinuxLinux6.17.4 <= 6.17.*unaffected
LinuxLinux6.18 <= *unaffected

Weaknesses

References