Incorrect calculation in Linux kernel - CVE-2026-90047
Published: September 16, 2026
Vulnerability identifier: #VU150249
CSH Severity: Low
CVSS v4: 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]
CVE-ID: CVE-2026-90047
CWE-ID: CWE-682
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
Linux kernel
How to mitigate CVE-2026-90047
Install security update from vendor's repository.