GSD-2021-1002366 ALSA: pcm: oss: Limit the period size to 16MB
A local attacker can cause a denial of service in the Linux Kernel ALSA OSS PCM subsystem by exploiting an unbounded period size allocation.
- 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-2021-1002366?
GSD-2021-1002366 is a denial of service vulnerability in Kernel, published on 19 Dec 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
ALSA: pcm: oss: Limit the period size to 16MB
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 v4.4.295 by commit d1bb703ad050de9095f10b2d3416c32921ac6bcc. For more details please see the references link.
Which versions are affected by GSD-2021-1002366?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1002366?
No fix has been published for GSD-2021-1002366 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-2021-1002366 being exploited?
There is no known exploitation of GSD-2021-1002366 in the wild and no public exploit code.