SB2026061073 - Out-of-bounds write in Linux kernel md driver

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Main Vulnerability Database SB2026061073

SB2026061073 - Out-of-bounds write in Linux kernel md driver

Published: June 10, 2026

Security Bulletin ID SB2026061073
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Out-of-bounds write (CVE-ID: CVE-2026-46294)

CWE-ID: CWE-787 - Out-of-bounds write

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local privileged user to cause a buffer overflow.

The vulnerability exists due to a buffer overflow in dm-ioctl retrieve_status when processing device mapper ioctl output buffers. A local privileged user can supply a crafted buffer layout to cause a buffer overflow.

Exploitation requires issuing device mapper ioctls, and the issue does not occur accidentally with commonly used libraries because they use 8-byte-aligned buffer sizes.


Remediation

Install update from vendor's website.

References