GSD-2021-1001722 mac80211-hwsim: fix late beacon hrtimer handling
A bug in the Linux kernel mac80211-hwsim module's beacon timer handling could lead to a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not stated
- Attackable
- Local or same network only
- Victim action needed
- Not stated
- Fix
- None listed
What is GSD-2021-1001722?
GSD-2021-1001722 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.
Official description
mac80211-hwsim: fix late beacon hrtimer handling
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 v5.14.10 by commit ed2adf69e29848d1eb9df99633dde655421c92ed, it was introduced in version v3.9 by commit 01e59e467ecf976c782eecd4dc99644802cc60e2. For more details please see the references link.
Which versions are affected by GSD-2021-1001722?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1001722?
No fix has been published for GSD-2021-1001722 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-2021-1001722 being exploited?
There is no known exploitation of GSD-2021-1001722 in the wild and no public exploit code.