SB2026081607 - Integer overflow in Linux kernel minix

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Main Vulnerability Database SB2026081607

SB2026081607 - Integer overflow in Linux kernel minix

Published: August 16, 2026

Security Bulletin ID SB2026081607
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Physical access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Integer overflow (CVE-ID: CVE-2026-72369)

CWE-ID: CWE-190 - Integer overflow

CVSSv4: 5.1 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows an attacker with physical access to cause a denial of service.

The vulnerability exists due to an integer overflow in minix_blocks_needed() in the Minix filesystem superblock handling when mounting a crafted Minix v3 filesystem image. An attacker with physical access can provide a crafted filesystem image with inode or zone counts near UINT_MAX to trigger a kernel panic.

The issue occurs because a zero bitmap block count can be accepted as valid, leading minix_fill_super() to dereference s_imap[0] or s_zmap[0] without allocated bitmap buffers.


Remediation

Install update from vendor's website.

References