GSD-2021-1000225 net: Only allow init netns to set default tcp cong to a restricted algo
A Linux kernel vulnerability allows privileged users to set restricted TCP congestion algorithms, potentially leading to privilege escalation.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is GSD-2021-1000225?
GSD-2021-1000225 is a vulnerability in Kernel, published on 31 May 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
net: Only allow init netns to set default tcp cong to a restricted algo
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 v5.12.4 by commit e7d7bedd507bb732e600403b7a96f9fe48d0ca31, it was introduced in version v4.15 by commit 6670e152447732ba90626f36dfc015a13fbf150e. For more details please see the references link.
Which versions are affected by GSD-2021-1000225?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1000225?
No fix has been published for GSD-2021-1000225 yet. Limit exposure of the affected software until one is available.
Is GSD-2021-1000225 being exploited?
There is no known exploitation of GSD-2021-1000225 in the wild and no public exploit code.