GSD-2021-1002158 drm/edid: In connector_bad_edid() cap num_of_ext by num_blocks read
A flaw in the Linux Kernel EDID parsing allows a local attacker to cause a denial of service via malformed data.
- 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-2021-1002158?
GSD-2021-1002158 is a denial of service vulnerability in Kernel, published on 14 Nov 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
drm/edid: In connector_bad_edid() cap num_of_ext by num_blocks read
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 v5.15 by commit 97794170b696856483f74b47bfb6049780d2d3a0, it was introduced in version v5.7 by commit e11f5bd8228fc3760c221f940b9f6365dbf3e7ed. For more details please see the references link.
Which versions are affected by GSD-2021-1002158?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1002158?
No fix has been published for GSD-2021-1002158 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-2021-1002158 being exploited?
There is no known exploitation of GSD-2021-1002158 in the wild and no public exploit code.