CVE-2026-80524 optee: ffa: Add NULL check in optee_ffa_lend_protmem
A missing NULL check in the Linux kernel's OP-TEE FFA driver can cause a null pointer dereference and system crash under memory pressure.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-80524?
CVE-2026-80524 is a vulnerability in Linux, published on 26 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:
optee: ffa: Add NULL check in optee_ffa_lend_protmem
Sashiko (locally) reports a possible null dereference under memory pressure due to the lack of validation of the allocated pointer.
Fix that by adding the missing check.
Which versions are affected by CVE-2026-80524?
How do I fix CVE-2026-80524?
Apply the vendor's patch.
Is CVE-2026-80524 being exploited?
There is no known exploitation of CVE-2026-80524 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-80524, DEBIAN-CVE-2026-80524, GHSA-7v3f-hf4p-6cvj, UBUNTU-CVE-2026-80524.