CVE-2026-99118
kernel: drm/i915/dmc: Harden DMC firmware payload parsing
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · October 28, 2026
Updated · October 29, 2026
Description
A flaw was found in the Linux kernel's i915 graphics driver. When parsing Display Microcontroller (DMC) firmware images, the driver does not properly validate payload sizes or check for integer multiplication overflow during size calculations. A local user with the ability to supply a malformed firmware file could exploit this flaw, potentially leading to memory corruption or a Denial of Service (DoS) via a system crash.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 4.4CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
CWE-190 · Integer Overflow or Wraparound