SB20260812275 - Integer overflow in Linux kernel drm sysfb driver
Published: August 12, 2026
Security Bulletin ID
SB20260812275
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) Integer overflow (CVE-ID: CVE-2026-68270)
CWE-ID: CWE-190 - Integer overflow
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 integer overflow in drm_sysfb_get_visible_size_si in drivers/gpu/drm/sysfb/drm_sysfb_screen_info.c when calculating the visible size of the system framebuffer. A local user can supply large height and stride values to trigger incorrect size calculation and cause a denial of service.
Remediation
Install update from vendor's website.