SB2026050285 - Division by zero in Linux kernel i915 display driver
Published: May 2, 2026
Security Bulletin ID
SB2026050285
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Division by zero (CVE-ID: CVE-2026-31767)
CWE-ID: CWE-369 - Divide By Zero
CVSSv4: 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/E:U/U:Clear
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a divide-by-zero error in the i915 dsi driver when determining display timing values in command mode. A local user can trigger driver loading on a system using the affected display configuration to cause a denial of service.
The issue occurs on some machines when the adjusted htotal becomes so small that line_time_us is calculated as zero.
Remediation
Install update from vendor's website.