CVE-2026-23213: drm/amd/pm: Disable MMIO access during SMU Mode 1 reset
drm/amd/pm: Disable MMIO access during SMU Mode 1 reset
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Configuration
Disable MMIO access during SMU Mode 1 reset by setting the no_hw_access flag to true immediately after the driver enters the sleep/wait state, before any MMIO register accesses while the device is offline (e.g., to prevent access from interrupt handlers or other driver threads during the reset window).
drm/amd/pm no_hw_access = true
Event History
Frequently Asked Questions
What is the severity of CVE-2026-23213?
CVE-2026-23213 has been classified with a high severity level due to potential disruption during Mode 1 reset in AMD GPUs.
How do I fix CVE-2026-23213?
To fix CVE-2026-23213, update your Linux kernel to the latest version where the vulnerability has been patched.
Which software is affected by CVE-2026-23213?
CVE-2026-23213 affects the AMD kernel driver within the Linux kernel.
What is the impact of CVE-2026-23213 on my system?
The impact of CVE-2026-23213 may include temporary loss of access to the GPU during reset cycles, affecting system stability.
Is CVE-2026-23213 being actively exploited?
As of now, there are no known active exploits for CVE-2026-23213, but it is recommended to apply the patch promptly.