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7.1
HIGH CVSS 3.1
CVE-2026-90419
nilfs2: prevent out-of-bounds read in super root block parsing
Overview
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]

Details
INFO

Published Date :

Sept. 17, 2026, 5:17 p.m.

Last Modified :

Sept. 18, 2026, 6:17 p.m.

Remotely Exploit :

No

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67
Impact
Affected Products

The following products are affected by CVE-2026-90419 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
: Total Affected Vendor : 1 | Products : 1
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 HIGH 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
Apply the Linux kernel patch to prevent out-of-bounds reads in nilfs2 filesystem parsing.
  • Apply the provided Linux kernel patch.
  • Update the Linux kernel to a patched version.
  • Rebuild the kernel with the patch.
  • Reboot the system after patching.
References
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2026-90419.

URL Resource
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
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-90419 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-90419 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2026-90419 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2026-90419 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Sep. 18, 2026

    Action Type Old Value New Value
    Added CVSS V3.1 AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
  • New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Sep. 17, 2026

    Action Type Old Value New Value
    Added 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]
    Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/90xxx/CVE-2026-90419.json">CVE-2026-90419</a>
    Added Reference https://git.kernel.org/stable/c/15c8559376416a84c3d8402fd8d0c89bb323d05f
    Added Reference https://git.kernel.org/stable/c/16df2520502867a4f34e202b89d01243d59bb8b5
    Added Reference https://git.kernel.org/stable/c/5b69ebe20d7f944c1f45177dca0c11474ac277cc
    Added Reference https://git.kernel.org/stable/c/7029e70cf86d5c54c0a2812479b0bee2cabcbaaa
    Added Reference https://git.kernel.org/stable/c/71bd64471ff583101b4a33dfc838ce29aef57960
    Added Reference https://git.kernel.org/stable/c/7cb2f76a6a2ba2130b577cb8ac13e1e46c4fc689
    Added Reference https://git.kernel.org/stable/c/842397fdfd2e61d6470166c796f3125b6c27a162
    Added Reference https://git.kernel.org/stable/c/dcc85fc28f884038735464f6f104dda9c7dbfad6
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CVSS
Vulnerability Scoring Details
Base CVSS Score: 7.1
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact