GSD-2022-1002673 tracing: Fix potential double free in create_var_ref()
A double free vulnerability in the Linux Kernel tracing subsystem allows local attackers to potentially escalate privileges or cause a system crash.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is GSD-2022-1002673?
GSD-2022-1002673 is an use after free vulnerability in Kernel, published on 28 Jun 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
tracing: Fix potential double free in create_var_ref()
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 v5.18.3 by commit bd83ff3bbfb003832481c9bff999d12385f396ae, it was introduced in version v4.17 by commit 067fe038e70f6e64960d26a79c4df5f1413d0f13. For more details please see the references link.
Which versions are affected by GSD-2022-1002673?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2022-1002673?
No fix has been published for GSD-2022-1002673 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-2022-1002673 being exploited?
There is no known exploitation of GSD-2022-1002673 in the wild and no public exploit code.