CVE-2026-97427 drm/amd/pm: bound pp_dpm_set_pp_table() memcpy
A heap overflow in the AMD powerplay driver allows local attackers to execute arbitrary code or escalate privileges via crafted sysfs writes.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-97427?
CVE-2026-97427 is a memory corruption vulnerability in Linux, published on 24 Sep 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/amd/pm: bound pp_dpm_set_pp_table() memcpy
The powerplay path allocates hardcode_pp_table once with kmemdup(..., soft_pp_table_size). memcpy(..., size) used the sysfs store count (up to PAGE_SIZE) with no upper bound, causing heap overflow. Reject writes where size exceeds soft_pp_table_size.
Which versions are affected by CVE-2026-97427?
How do I fix CVE-2026-97427?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-97427 being exploited?
There is no known exploitation of CVE-2026-97427 in the wild and no public exploit code.
Sources
Also known as AZL-104019, BELL-CVE-2026-97427, DEBIAN-CVE-2026-97427, GHSA-797r-35j2-ppqg, UBUNTU-CVE-2026-97427.