GSD-2023-1000543 fbdev: fbcon: release buffer when fbcon_do_set_font() failed
A memory leak in the Linux kernel fbcon driver can lead to resource exhaustion or potential privilege escalation when font setting fails.
- 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-2023-1000543?
GSD-2023-1000543 is a memory corruption vulnerability in Kernel, published on 17 Jan 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
fbdev: fbcon: release buffer when fbcon_do_set_font() failed
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 v6.0.16 by commit 06926607b9fddf7ce8017493899ce6eb7e79a123, it was introduced in version v6.0 by commit a5a923038d70d2d4a86cb4e3f32625a5ee6e7e24. For more details please see the references link.
Which versions are affected by GSD-2023-1000543?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2023-1000543?
No fix has been published for GSD-2023-1000543 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is GSD-2023-1000543 being exploited?
There is no known exploitation of GSD-2023-1000543 in the wild and no public exploit code.