GSD-2021-1001053 batman-adv: Avoid WARN_ON timing related checks
A timing-related check in the batman-adv kernel module can trigger a warning, potentially leading 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-2021-1001053?
GSD-2021-1001053 is a denial of service vulnerability in Kernel, published on 30 Jun 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
batman-adv: Avoid WARN_ON timing related checks
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 v5.12.13 by commit 2eb4e0b3631832a4291c8bf4c9db873f60b128c8, it was introduced in version v3.14 by commit ef0a937f7a1450d3a133ccd83c9c7d07587e7a00. For more details please see the references link.
Which versions are affected by GSD-2021-1001053?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1001053?
No fix has been published for GSD-2021-1001053 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-2021-1001053 being exploited?
There is no known exploitation of GSD-2021-1001053 in the wild and no public exploit code.