GSD-2021-1001761 comedi: Fix memory leak in compat_insnlist()
A memory leak in the Linux kernel's comedi subsystem allows local attackers to cause resource exhaustion and denial of service.
- 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-2021-1001761?
GSD-2021-1001761 is a denial of service vulnerability in Kernel, published on 19 Oct 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
comedi: Fix memory leak in compat_insnlist()
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 v5.14.9 by commit f217b6c1e28ed0b353634ce4d92a155b80bd1671, it was introduced in version v5.8 by commit b8d47d8813055ce38c0d2ad913d5462017e52692. For more details please see the references link.
Which versions are affected by GSD-2021-1001761?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1001761?
No fix has been published for GSD-2021-1001761 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is GSD-2021-1001761 being exploited?
There is no known exploitation of GSD-2021-1001761 in the wild and no public exploit code.