---
id: "CVE-2026-99146"
kind: "vulnerability"
aliases: ["CVE-2026-99146"]
title: "Linux kernel: missing bounds check on i915 DMC firmware load address"
severity: "unknown"
cvss: null
epss: null
exploited: false
status: "open"
category: "runtime"
products: []
ecosystems: []
tags: ["i915", "intel-graphics", "kernel", "linux", "runtime"]
not_affected_if: ["no-intel-graphics"]
published_at: "2026-10-28T11:17:34+00:00"
first_seen_at: "2026-10-28T11:32:35+00:00"
updated_at: "2026-10-28T11:36:01+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-99146", "first_seen_at": "2026-10-28T11:32:35+00:00"}]
---

# Linux kernel: missing bounds check on i915 DMC firmware load address

The Linux kernel's Intel i915 graphics driver used a DMC firmware load address from the firmware header without validating it. The fix adds a range check so an out-of-range address is rejected.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Run `uname -r` and compare against the fixed kernel versions in the upstream commit 5e47ee5c76ca9becde8df4ad5202845b7ffcbc4c
- Check whether the i915 driver is loaded with `lsmod | grep i915`
- unknown whether the sources list an exact affected version range

## Fix

- Update the Linux kernel to a release that includes commit 5e47ee5c76ca9becde8df4ad5202845b7ffcbc4c, from your distribution's kernel updates
- unknown for exact fixed version numbers, as the sources do not list them

## Timeline

- 2026-10-28T11:32:35+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-99146

## From the sources

In the Linux kernel, the following vulnerability has been resolved:

drm/i915/dmc: Add sanity check for DMC load address

For DMC firmware header version 3, the firmware load address is stored
in dmc_info->start_mmioaddr and later used by dmc_load_program().

Unlike the MMIO address table, the firmware load address is not
validated. Add a sanity check to ensure it is within the valid range.

BSpec: 69671, 68378
(cherry picked from commit 5e47ee5c76ca9becde8df4ad5202845b7ffcbc4c)

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_