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CVE-2026-90419NVD

Vulnerability 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]
Severity Level
HIGH(7.1)
Published Date
Sep 17, 2026
Last Modified
Sep 18, 2026
Exploitation Status
No confirmed exploitation yet
EPSS Score (30-Day)
0.17%Probability
Root Weakness (CWE)
N/A
CVSS v3.1 Base Metrics — Score 7.1 (HIGH)
Attack VectorLocal
Attack ComplexityLow
Privileges RequiredNone
User InteractionRequired
ScopeUnchanged
ConfidentialityHigh
IntegrityNone
AvailabilityHigh

Affected & Patched Versions

Affected Versions
  • Linux Linux >= 8a9d2191e9f43bbcd256a9a6871bd73434c83f2f and < 16df2520502867a4f34e202b89d01243d59bb8b5
  • Linux Linux >= 8a9d2191e9f43bbcd256a9a6871bd73434c83f2f and < dcc85fc28f884038735464f6f104dda9c7dbfad6
  • Linux Linux >= 8a9d2191e9f43bbcd256a9a6871bd73434c83f2f and < 5b69ebe20d7f944c1f45177dca0c11474ac277cc
  • Linux Linux >= 8a9d2191e9f43bbcd256a9a6871bd73434c83f2f and < 7029e70cf86d5c54c0a2812479b0bee2cabcbaaa
  • Linux Linux >= 8a9d2191e9f43bbcd256a9a6871bd73434c83f2f and < 71bd64471ff583101b4a33dfc838ce29aef57960
  • Linux Linux >= 8a9d2191e9f43bbcd256a9a6871bd73434c83f2f and < 842397fdfd2e61d6470166c796f3125b6c27a162
  • Linux Linux >= 8a9d2191e9f43bbcd256a9a6871bd73434c83f2f and < 15c8559376416a84c3d8402fd8d0c89bb323d05f
  • Linux Linux >= 8a9d2191e9f43bbcd256a9a6871bd73434c83f2f and < 7cb2f76a6a2ba2130b577cb8ac13e1e46c4fc689
  • Linux Linux >= 2.6.30
Patched Versions
  • Linux Linux 16df2520502867a4f34e202b89d01243d59bb8b5
  • Linux Linux dcc85fc28f884038735464f6f104dda9c7dbfad6
  • Linux Linux 5b69ebe20d7f944c1f45177dca0c11474ac277cc
  • Linux Linux 7029e70cf86d5c54c0a2812479b0bee2cabcbaaa
  • Linux Linux 71bd64471ff583101b4a33dfc838ce29aef57960
  • Linux Linux 842397fdfd2e61d6470166c796f3125b6c27a162
  • Linux Linux 15c8559376416a84c3d8402fd8d0c89bb323d05f
  • Linux Linux 7cb2f76a6a2ba2130b577cb8ac13e1e46c4fc689
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