SB20260528231 - Integer overflow in Linux kernel drm display driver

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Main Vulnerability Database SB20260528231

SB20260528231 - Integer overflow in Linux kernel drm display driver

Published: May 28, 2026

Security Bulletin ID SB20260528231
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) Integer overflow (CVE-ID: CVE-2025-71305)

CWE-ID: CWE-190 - Integer overflow

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


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

The vulnerability exists due to an integer underflow leading to a shift-out-of-bounds condition in drm_dp_atomic_release_time_slots in the drm/display/dp_mst subsystem when releasing DisplayPort MST timeslots after a monitor disconnect event. A local user can trigger a crafted hotplug and disconnect sequence to cause a denial of service.

The issue can occur when delayed destroy work runs after a DP 2.1 monitor is disconnected, causing the VCPI value to become 0.


Remediation

Install update from vendor's website.

References