GSD-2021-1001309 net/sched: act_skbmod: Skip non-Ethernet packets
A flaw in the Linux kernel's skbmod action allows local attackers to cause a denial of service by sending non-Ethernet packets.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is GSD-2021-1001309?
GSD-2021-1001309 is a denial of service vulnerability in Kernel, published on 3 Aug 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
net/sched: act_skbmod: Skip non-Ethernet packets
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 v5.4.136 by commit a88414fb1117f2fe65fb88e45ba694e1d09d5024, it was introduced in version v4.9 by commit 86da71b57383d40993cb90baafb3735cffe5d800. For more details please see the references link.
Which versions are affected by GSD-2021-1001309?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1001309?
No fix has been published for GSD-2021-1001309 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-2021-1001309 being exploited?
There is no known exploitation of GSD-2021-1001309 in the wild and no public exploit code.