GSD-2023-1001869 fbcon: Check font dimension limits
Missing font dimension checks in the Linux kernel fbcon driver can lead to 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-2023-1001869?
GSD-2023-1001869 is a denial of service vulnerability in Kernel, published on 13 Feb 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
fbcon: Check font dimension limits
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 v6.1.11 by commit 5e7f6e2ade57dfd6d133ff7c643abd2079248943, it was introduced in version v2.6.22 by commit 2d2699d984924890f6dac8cf51c3b6311f56816c. For more details please see the references link.
Which versions are affected by GSD-2023-1001869?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2023-1001869?
No fix has been published for GSD-2023-1001869 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-2023-1001869 being exploited?
There is no known exploitation of GSD-2023-1001869 in the wild and no public exploit code.