CVE-2026-90419 (CVSS 7.1)

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]

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CVSS v3.1 Score

7.1

HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H

EPSS — Exploit Prediction

0.0018

Probability of exploitation

0.07%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

References

Other References

https://git.kernel.org/stable/c/15c8559376416a84c3d8402fd8d0c89bb323d05f https://git.kernel.org/stable/c/16df2520502867a4f34e202b89d01243d59bb8b5 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/7cb2f76a6a2ba2130b577cb8ac13e1e46c4fc689 https://git.kernel.org/stable/c/842397fdfd2e61d6470166c796f3125b6c27a162 https://git.kernel.org/stable/c/dcc85fc28f884038735464f6f104dda9c7dbfad6

Frequently Asked Questions

What is CVE-2026-90419? +

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] It has a CVSS v3.1 base score of 7.1 (HIGH).

How severe is CVE-2026-90419? +

CVE-2026-90419 has a CVSS v3.1 score of 7.1 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0018, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-90419? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

CVE-2026-90419