What’s Vulnerable › Vulnerabilities

CVE-2026-89813: drm/amdgpu: force complete the KIQ ring fences on reset

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-16 · updated 2026-10-30

Description

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: force complete the KIQ ring fences on reset Like the MES scheduler ring, the KIQ ring sets no_scheduler = true and uses a polling fence, so it is skipped by the force-completion loop in amdgpu_device_pre_asic_reset(). Its hw fence value lives in wb (GTT) memory and survives a MODE1 reset while fence_drv.sync_seq keeps advancing, so after a reset the first KIQ submission can poll forever on a seq that is never written back. Force complete the KIQ ring fences too so their hw fence is realigned to sync_seq.

Affected products

• Linux: 4.13 — fixed in 7.3

How to fix

Upgrade to a fixed version: Linux 7.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/11adb2bae30a3155395594e5c9bc0daf0c4ffa15
• https://git.kernel.org/stable/c/83c54ed3be2f71a21e0f12ce5ca64435e33ba440
• https://git.kernel.org/stable/c/9944329e409b04d71fa22f39b38a4bd78b75bcd9
• https://git.kernel.org/stable/c/bdd6a58743e00ebc6d52b9cdf9aafb4e535e0b71
• https://git.kernel.org/stable/c/c26cbd5c33cd72daa03079235de60688a3c97c52
• https://git.kernel.org/stable/c/fd65d1742992361fc2201ecb4e43411e6e417fcb

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