SB2026091714 - Out-of-bounds read in Linux kernel mtd parsers driver

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Main Vulnerability Database SB2026091714

SB2026091714 - Out-of-bounds read in Linux kernel mtd parsers driver

Published: September 17, 2026

Security Bulletin ID SB2026091714
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Out-of-bounds read (CVE-ID: CVE-2026-89954)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to disclose sensitive information, modify data, or cause a denial of service through an out-of-bounds memory access.

The vulnerability exists due to improper bounds checking in the AFS v2 parser when parsing a crafted AFS v2 image. A remote attacker can supply an image with a footer offset or region count that exceeds expected bounds to disclose sensitive information, modify data, or cause a denial of service through an out-of-bounds memory access.


Remediation

Install update from vendor's website.

References