CVE-2026-68254 drm/i915/vrr: require valid min/max vfreq for VRR
A missing validation in the Intel i915 GPU driver allows a local attacker to trigger a division by zero, causing a system crash.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-68254?
CVE-2026-68254 is a denial of service vulnerability in Linux, published on 10 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
drm/i915/vrr: require valid min/max vfreq for VRR
Ensure the EDID provided min/max vfreq are valid. Most scenarios are already covered (by coincidence) through the checks in intel_vrr_is_capable() and intel_vrr_is_in_range(), but be more explicit about it. At worst, a zero min_vfreq could lead to a division by zero in intel_vrr_compute_vmax().
Discovered using AI-assisted static analysis confirmed by Intel Product Security.
(cherry picked from commit 1765cf59f517b02f3b0591fe5120930d08bddeb6)
Which versions are affected by CVE-2026-68254?
How do I fix CVE-2026-68254?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-68254 being exploited?
There is no known exploitation of CVE-2026-68254 in the wild and no public exploit code.
Sources
Also known as AZL-94932, BELL-CVE-2026-68254, DEBIAN-CVE-2026-68254, GHSA-pg4j-qqhw-89pg, UBUNTU-CVE-2026-68254.