SB20260720186 - Out-of-bounds read in Linux kernel msm disp driver

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Main Vulnerability Database SB20260720186

SB20260720186 - Out-of-bounds read in Linux kernel msm disp driver

Published: July 20, 2026

Security Bulletin ID SB20260720186
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 read (CVE-ID: CVE-2026-64039)

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

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to an out-of-bounds read in msm_disp_state_print_regs and related snapshot dumping logic when processing unaligned DSI register regions. A local user can trigger snapshotting of a specially positioned unaligned region to cause a denial of service.

The issue occurs because some DSI data regions are shifted by 4 bytes, causing the last registers in the region to be handled incorrectly.


Remediation

Install update from vendor's website.

References