GSD-2022-1002420 video: fbdev: cirrusfb: check pixclock to avoid divide by zero
A divide-by-zero error in the cirrusfb driver allows local attackers to 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-2022-1002420?
GSD-2022-1002420 is a denial of service vulnerability in Kernel, published on 24 Apr 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
video: fbdev: cirrusfb: check pixclock to avoid divide by zero
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 v4.14.276 by commit 1d3fb46439ad4e8f0c5739eb33d1875ac9e0f135. For more details please see the references link.
Which versions are affected by GSD-2022-1002420?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2022-1002420?
No fix has been published for GSD-2022-1002420 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-2022-1002420 being exploited?
There is no known exploitation of GSD-2022-1002420 in the wild and no public exploit code.