SB2026091674 - Incorrect calculation in Linux kernel drm xe driver
Published: September 16, 2026
Security Bulletin ID
SB2026091674
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Incorrect calculation (CVE-ID: CVE-2026-90047)
CWE-ID: CWE-682 - Incorrect Calculation
CVSSv4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local user to corrupt VRAM allocations and cause a denial of service.
The vulnerability exists due to improper rounding of the flat CCS storage offset in get_flat_ccs_offset() in the drm/xe VRAM management code when allocating VRAM. A local user can trigger allocation of VRAM that includes compression hardware storage to corrupt VRAM allocations and cause a denial of service.
Remediation
Install update from vendor's website.