Description
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]
References8
- git.kernel.org/stable/c/15c8559376416a84c3d8402fd8d0c89bb323d05f
- git.kernel.org/stable/c/16df2520502867a4f34e202b89d01243d59bb8b5
- git.kernel.org/stable/c/5b69ebe20d7f944c1f45177dca0c11474ac277cc
- git.kernel.org/stable/c/7029e70cf86d5c54c0a2812479b0bee2cabcbaaa
- git.kernel.org/stable/c/71bd64471ff583101b4a33dfc838ce29aef57960
- git.kernel.org/stable/c/7cb2f76a6a2ba2130b577cb8ac13e1e46c4fc689
- git.kernel.org/stable/c/842397fdfd2e61d6470166c796f3125b6c27a162
- git.kernel.org/stable/c/dcc85fc28f884038735464f6f104dda9c7dbfad6
Metrics
- CVSS 3.1
-
7.1
HIGH
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H - EPSS — exploit probability
- 0% percentile: 7 · as of 8 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.