GSD-2021-1000771 wireguard: allowedips: free empty intermediate nodes when removing single node
A use-after-free vulnerability in the WireGuard allowedips module allows attackers to cause denial of service or potentially execute code.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is GSD-2021-1000771?
GSD-2021-1000771 is an use after free vulnerability in Kernel, published on 25 Jun 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
wireguard: allowedips: free empty intermediate nodes when removing single node
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 v5.10.43 by commit df3b45f6d1ce605120750b983fc4448e3769619a, it was introduced in version v5.6 by commit e7096c131e5161fa3b8e52a650d7719d2857adfd. For more details please see the references link.
Which versions are affected by GSD-2021-1000771?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1000771?
No fix has been published for GSD-2021-1000771 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is GSD-2021-1000771 being exploited?
There is no known exploitation of GSD-2021-1000771 in the wild and no public exploit code.