CVE-2026-90419

Summary

In the Linux kernel, the following vulnerability has been resolved:

nilfs2: prevent out-of-bounds read in super root block parsing

super-root inode metadata size is trusted before nilfs_read_inode_common().

Reject super-root inode sizes whose computed on-disk footprint exceeds the filesystem block size. This prevents malformed filesystem images from making nilfs_read_inode_common() read past the end of the super-root block.

[ryusuke: clarify the commit title]

Affected Software

VendorProductVersion RangeStatus
LinuxLinux8a9d2191e9f43bbcd256a9a6871bd73434c83f2f < 16df2520502867a4f34e202b89d01243d59bb8b5affected
LinuxLinux8a9d2191e9f43bbcd256a9a6871bd73434c83f2f < dcc85fc28f884038735464f6f104dda9c7dbfad6affected
LinuxLinux8a9d2191e9f43bbcd256a9a6871bd73434c83f2f < 5b69ebe20d7f944c1f45177dca0c11474ac277ccaffected
LinuxLinux8a9d2191e9f43bbcd256a9a6871bd73434c83f2f < 7029e70cf86d5c54c0a2812479b0bee2cabcbaaaaffected
LinuxLinux8a9d2191e9f43bbcd256a9a6871bd73434c83f2f < 71bd64471ff583101b4a33dfc838ce29aef57960affected
LinuxLinux8a9d2191e9f43bbcd256a9a6871bd73434c83f2f < 842397fdfd2e61d6470166c796f3125b6c27a162affected
LinuxLinux8a9d2191e9f43bbcd256a9a6871bd73434c83f2f < 15c8559376416a84c3d8402fd8d0c89bb323d05faffected
LinuxLinux8a9d2191e9f43bbcd256a9a6871bd73434c83f2f < 7cb2f76a6a2ba2130b577cb8ac13e1e46c4fc689affected
LinuxLinux2.6.30affected
LinuxLinux0 < 2.6.30unaffected
LinuxLinux5.10.270 <= 5.10.*unaffected
LinuxLinux5.15.221 <= 5.15.*unaffected
LinuxLinux6.1.188 <= 6.1.*unaffected
LinuxLinux6.6.157 <= 6.6.*unaffected
LinuxLinux6.12.110 <= 6.12.*unaffected
LinuxLinux6.18.52 <= 6.18.*unaffected
LinuxLinux7.2.6 <= 7.2.*unaffected
LinuxLinux7.3-rc1 <= *unaffected

Weaknesses

References