CVE-2026-68241: drm/i915/mst: limit DP MST ESI service loop
In the Linux kernel, the following vulnerability has been resolved:
drm/i915/mst: limit DP MST ESI service loop
The loop in inteldpcheckmststatus() keeps servicing interrupts originating from the sink without bound. Add an upper bound to the new interrupts occurring during interrupt processing to not get stuck on potentially stuck sink devices. Use arbitrary 32 tries to clear incoming interrupts in one go.
Discovered using AI-assisted static analysis confirmed by Intel Product Security.
Note: The condition likely pre-dates the commit in the Fixes: tag, but this is about as far back as a backport has any chance of succeeding. Before that, the retry had a goto.
(cherry picked from commit b4ea5272133059acb493cc36599071a9e852ec2e)
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-68241?
CVE-2026-68241 has a risk rating of 23.
How do I fix CVE-2026-68241?
To fix CVE-2026-68241, update to the latest version of the Linux kernel that contains the patch for this vulnerability.
What systems are affected by CVE-2026-68241?
CVE-2026-68241 affects systems running impacted versions of the Linux kernel with Intel graphics drivers.
What are the potential impacts of CVE-2026-68241?
The potential impacts include denial of service due to an infinite interrupt servicing loop.
When was CVE-2026-68241 published?
CVE-2026-68241 was published on August 10, 2026.