CVE-2026-97911 accel: ethosu: Ensure SRAM region size matches job
A local attacker can access stale SRAM memory from previous jobs by setting the job SRAM size to zero, bypassing intended memory isolation in the Ethos-U accelerator driver.
- 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-2026-97911?
CVE-2026-97911 is a high-severity missing authorization vulnerability in Linux, published on 25 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:
accel: ethosu: Ensure SRAM region size matches job
It is possible for userspace to set the job SRAM size to 0, but then still have SRAM accesses in the command stream. When the job SRAM size is 0, setting the region base register is skipped and a stale base address from a prior job is used.
Check the region size against the job's SRAM size instead of just the size of the SRAM. The job's SRAM size was already checked against the total SRAM size.
Which versions are affected by CVE-2026-97911?
How do I fix CVE-2026-97911?
Apply the vendor's patch.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-97911 being exploited?
There is no known exploitation of CVE-2026-97911 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-97911, GHSA-q5mm-h94w-h3jf, UBUNTU-CVE-2026-97911.