Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: drm/i915/dmc: Harden DMC firmware payload parsing Validate the conversion of the DMC firmware size from dwords to bytes using check_mul_overflow() before calculating the firmware payload size. Reject zero-length payloads and zero MMIO counts in the DMC firmware header so malformed firmware is caught early. Also set dmc_fw_size only after the payload allocation succeeds. (cherry picked from commit efde6601a1f1daedfe3dcc2816c934ddb44e3eef)
References
- https://git.kernel.org/stable/c/05f7a2f712f8b287a98ee61a7c2c6b72dad2fc6d
- https://git.kernel.org/stable/c/0e396088fa5c1f96ff43de29c2a2f8807078723d
- https://git.kernel.org/stable/c/4589ad76a6b1011538600ad398baf0b7d73a1252
- https://git.kernel.org/stable/c/53068cf3851dd4e00e8e668563e0353d9d79a98b
- https://git.kernel.org/stable/c/8bb1858db453cd4250e3b633f5d2d09206024ca6
- https://git.kernel.org/stable/c/dfcfe2874e7c16e8460dc86ac1eeb54ea0e7f8aa
- https://git.kernel.org/stable/c/e33921271d4438f4a24014f560e5ab297d7eda3f
- https://git.kernel.org/stable/c/eb7a0ba650d607976d1a0a5e7501d3f14b35d026
FAQ
What is CVE-2026-99118?
CVE-2026-99118 is a documented vulnerability. In the Linux kernel, the following vulnerability has been resolved: drm/i915/dmc: Harden DMC firmware payload parsing Validate the conversion of the DMC firmware size from dwords to bytes using chec...
How severe is CVE-2026-99118?
CVSS scoring is not yet available for CVE-2026-99118. Check NVD for updates.
Is there a patch for CVE-2026-99118?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.