GSD-2021-1001054 mac80211: fix skb length check in ieee80211_scan_rx()
A missing length check in the Linux kernel's mac80211 scan handler can lead to a denial of service via malformed packets.
- 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-2021-1001054?
GSD-2021-1001054 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
mac80211: fix skb length check in ieee80211_scan_rx()
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 d1b949c70206178b12027f66edc088d40375b5cb, it was introduced in version v5.10 by commit cd418ba63f0c2f6157f35a41c9accc6ecb52590a. For more details please see the references link.
Which versions are affected by GSD-2021-1001054?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1001054?
No fix has been published for GSD-2021-1001054 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-2021-1001054 being exploited?
There is no known exploitation of GSD-2021-1001054 in the wild and no public exploit code.