CVE-2026-80649 firmware: arm_scmi: Fix OOB in scmi_power_name_get()
An out-of-bounds access in the Linux kernel's SCMI power driver allows attackers to cause a denial of service or disclose sensitive memory.
- 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-2026-80649?
CVE-2026-80649 is a high-severity memory corruption vulnerability in Linux, published on 28 Aug 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:
firmware: arm_scmi: Fix OOB in scmi_power_name_get()
scmi_power_name_get() does not validate the domain number passed by the external caller, which may lead to an out-of-bounds access.
Fix this by returning "unknown" for invalid domains, like scmi_reset_name_get() does.
Which versions are affected by CVE-2026-80649?
How do I fix CVE-2026-80649?
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-2026-80649 being exploited?
There is no known exploitation of CVE-2026-80649 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-80649, DEBIAN-CVE-2026-80649, GHSA-r237-xgfx-686p, UBUNTU-CVE-2026-80649.