GSD-2022-1000555 libsubcmd: Fix use-after-free for realloc(..., 0)
A use-after-free vulnerability in the Linux kernel's libsubcmd component allows local attackers to potentially execute arbitrary code or escalate privileges.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is GSD-2022-1000555?
GSD-2022-1000555 is an use after free vulnerability in Kernel, published on 27 Feb 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
libsubcmd: Fix use-after-free for realloc(…, 0)
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 v5.16.11 by commit 754db970b075490448ce7d0a5716224339314873, it was introduced in version v4.5 by commit 2f4ce5ec1d447beb42143a9653716a2ab025161e. For more details please see the references link.
Which versions are affected by GSD-2022-1000555?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2022-1000555?
No fix has been published for GSD-2022-1000555 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-2022-1000555 being exploited?
There is no known exploitation of GSD-2022-1000555 in the wild and no public exploit code.