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CVE-2026-97422: drm/amdkfd: fix SMI event cross-process information leak

• 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: 2026-09-24 · updated 2026-10-30

Description

In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: fix SMI event cross-process information leak kfd_smi_ev_enabled() skips the suser privilege check when pid=0. PROCESS_START, PROCESS_END, and VMFAULT events are emitted with pid=0 while carrying another process's PID and command name, so any /dev/kfd user in the render group can monitor all GPU workloads. Pass the target process PID into kfd_smi_event_add() for these events so the existing per-client filter restricts delivery to the owning process or CAP_SYS_ADMIN subscribers.

Affected products

• Linux: 5.9 — fixed in 7.2

How to fix

Upgrade to a fixed version: Linux 7.2. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/470319a893f616ef661a63e825a8e1b9b6eddb91
• https://git.kernel.org/stable/c/5bb2dfa65d8da83e87b2a31c270bc567df69a5ca
• https://git.kernel.org/stable/c/6fc7ab7fcd7eefb2f371a1d43cf7a860a08f922a
• https://git.kernel.org/stable/c/92a8dba246d371fe268280e5fd74b0955688e6df
• https://git.kernel.org/stable/c/b8151aeb4f34e913315058c192f78fea2223f36a

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