GSD-2021-1000732 pid: take a reference when initializing `cad_pid`
A use-after-free vulnerability in the Linux kernel's cad_pid initialization allows local attackers to potentially escalate privileges or cause a denial of service.
- 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-2021-1000732?
GSD-2021-1000732 is an use after free vulnerability in Kernel, published on 24 Jun 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
pid: take a reference when initializing cad_pid
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 v4.14.236 by commit 4dbd8808a591b49b717862e6e0081bcf14a87788, it was introduced in version v2.6.19 by commit 9ec52099e4b8678a60e9f93e41ad87885d64f3e6. For more details please see the references link.
Which versions are affected by GSD-2021-1000732?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1000732?
No fix has been published for GSD-2021-1000732 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-2021-1000732 being exploited?
There is no known exploitation of GSD-2021-1000732 in the wild and no public exploit code.