CVE-2026-90419 PUBLISHED

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

Assigner: Linux
Reserved: 11.09.2026 Published: 17.09.2026 Updated: 17.09.2026

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]

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from 8a9d2191e9f43bbcd256a9a6871bd73434c83f2f to 16df2520502867a4f34e202b89d01243d59bb8b5 (excl.)
  • affected from 8a9d2191e9f43bbcd256a9a6871bd73434c83f2f to dcc85fc28f884038735464f6f104dda9c7dbfad6 (excl.)
  • affected from 8a9d2191e9f43bbcd256a9a6871bd73434c83f2f to 5b69ebe20d7f944c1f45177dca0c11474ac277cc (excl.)
  • affected from 8a9d2191e9f43bbcd256a9a6871bd73434c83f2f to 7029e70cf86d5c54c0a2812479b0bee2cabcbaaa (excl.)
  • affected from 8a9d2191e9f43bbcd256a9a6871bd73434c83f2f to 71bd64471ff583101b4a33dfc838ce29aef57960 (excl.)
  • affected from 8a9d2191e9f43bbcd256a9a6871bd73434c83f2f to 842397fdfd2e61d6470166c796f3125b6c27a162 (excl.)
  • affected from 8a9d2191e9f43bbcd256a9a6871bd73434c83f2f to 15c8559376416a84c3d8402fd8d0c89bb323d05f (excl.)
  • affected from 8a9d2191e9f43bbcd256a9a6871bd73434c83f2f to 7cb2f76a6a2ba2130b577cb8ac13e1e46c4fc689 (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 2.6.30 is affected
  • unaffected from 0 to 2.6.30 (excl.)
  • unaffected from 5.10.270 to 5.10.* (incl.)
  • unaffected from 5.15.221 to 5.15.* (incl.)
  • unaffected from 6.1.188 to 6.1.* (incl.)
  • unaffected from 6.6.157 to 6.6.* (incl.)
  • unaffected from 6.12.110 to 6.12.* (incl.)
  • unaffected from 6.18.52 to 6.18.* (incl.)
  • unaffected from 7.2.6 to 7.2.* (incl.)
  • unaffected from 7.3-rc1 to * (incl.)

References