High 7.1Published Sep 17, 2026

CVE-2026-90419nilfs2: prevent out-of-bounds read in super root block parsing

Updated under an hour ago (Oct 28, 2026, 4:30 AM ET)

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Exploited in the last 30 days

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]

CVSS: 7.1 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Received
Record last updated: Oct 19, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 8a9d2191e9f43bbcd256a9a6871bd73434c83f2f before 16df2520502867a4f34e202b89d01243d59bb8b5; from 8a9d2191e9f43bbcd256a9a6871bd73434c83f2f before dcc85fc28f884038735464f6f104dda9c7dbfad6; 8a9d2191e9f43bbcd256a9a6871bd73434c83f2f builds before 5b69ebe20d7f944c1f45177dca0c11474ac277cc; from 8a9d2191e9f43bbcd256a9a6871bd73434c83f2f before 7029e70cf86d5c54c0a2812479b0bee2cabcbaaa; from 8a9d2191e9f43bbcd256a9a6871bd73434c83f2f before 71bd64471ff583101b4a33dfc838ce29aef57960; from 8a9d2191e9f43bbcd256a9a6871bd73434c83f2f before 842397fdfd2e61d6470166c796f3125b6c27a162; from 8a9d2191e9f43bbcd256a9a6871bd73434c83f2f before 15c8559376416a84c3d8402fd8d0c89bb323d05f; 8a9d2191e9f43bbcd256a9a6871bd73434c83f2f builds before 7cb2f76a6a2ba2130b577cb8ac13e1e46c4fc689	CNA record

References

References

https://git.kernel.org/stable/c/16df2520502867a4f34e202b89d01243d59bb8b5
https://git.kernel.org/stable/c/dcc85fc28f884038735464f6f104dda9c7dbfad6
https://git.kernel.org/stable/c/5b69ebe20d7f944c1f45177dca0c11474ac277cc
https://git.kernel.org/stable/c/7029e70cf86d5c54c0a2812479b0bee2cabcbaaa
https://git.kernel.org/stable/c/71bd64471ff583101b4a33dfc838ce29aef57960
https://git.kernel.org/stable/c/842397fdfd2e61d6470166c796f3125b6c27a162
https://git.kernel.org/stable/c/15c8559376416a84c3d8402fd8d0c89bb323d05f
https://git.kernel.org/stable/c/7cb2f76a6a2ba2130b577cb8ac13e1e46c4fc689

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.