Executive brief
A bug in the Linux kernel's AMD graphics driver could cause a system warning or instability when shutting down or removing the driver on certain virtualized systems. This occurs because the system tries to release a hardware resource that was never actually activated. While primarily a technical error, it can lead to unexpected system behavior during maintenance or deinitialization.
Technical details
A vulnerability in the amdgpu driver's VCN (Video Core Next) component, specifically in version 2.5, causes a kernel call trace during hardware deinitialization. The root cause is that the driver attempts to call 'amdgpu_irq_put' for a RAS poison interrupt on a Virtual Function (VF) environment, even though VFs do not enable these interrupts. This results in a kernel warning at 'amdgpu_irq.c' during 'vcn_v2_5_hw_fini'. The fix introduces a check to skip this release operation if the device is running as an SRIOV VF. Patches have been merged into the stable Linux kernel tree.
Affected products
- Linux Linux Kernel VCNv2.5
Timeline
- 2026-01-22: other: Patch authored by Lijo Lazar
- 2026-05-08: disclosed: CVE published