GSD-2021-1001561 mac80211: limit injected vht mcs/nss in ieee80211_parse_tx_radiotap
An attacker with local access or adjacent network proximity can cause a denial of service in the Linux kernel by injecting malformed VHT MCS/NSS values in radiotap headers.
- 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-2021-1001561?
GSD-2021-1001561 is a denial of service vulnerability in Kernel, published on 19 Oct 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
mac80211: limit injected vht mcs/nss in ieee80211_parse_tx_radiotap
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 v4.19.209 by commit 76538c7b4df314bb937e44c5cb1782f37d47443c, it was introduced in version v4.7 by commit 646e76bb5daf4ca38438c69ffb72cccb605f3466. For more details please see the references link.
Which versions are affected by GSD-2021-1001561?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1001561?
No fix has been published for GSD-2021-1001561 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-2021-1001561 being exploited?
There is no known exploitation of GSD-2021-1001561 in the wild and no public exploit code.