GSD-2021-1002811 tee: optee: Fix incorrect page free bug
A use-after-free bug in the Linux Kernel OP-TEE driver allows local attackers to cause denial of service or potentially escalate privileges.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is GSD-2021-1002811?
GSD-2021-1002811 is an use after free vulnerability in Kernel, published on 30 Dec 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
tee: optee: Fix incorrect page free bug
This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.10.89 by commit ad338d825e3f7b96ee542bf313728af2d19fe9ad, it was introduced in version v5.10.58 by commit 1340dc3fb75ea69221f4f5dcb0cbace55ad0331c. For more details please see the references link.
Which versions are affected by GSD-2021-1002811?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1002811?
No fix has been published for GSD-2021-1002811 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is GSD-2021-1002811 being exploited?
There is no known exploitation of GSD-2021-1002811 in the wild and no public exploit code.