GSD-2022-1000891 gso: do not skip outer ip header in case of ipip and net_failover
A flaw in Linux kernel GSO handling for ipip and net_failover can cause denial of service by skipping outer IP headers.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is GSD-2022-1000891?
GSD-2022-1000891 is a denial of service vulnerability in Kernel, published on 18 Mar 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
gso: do not skip outer ip header in case of ipip and net_failover
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 v5.4.182 by commit 2b3cdd70ea5f5a694f95ea1788393fb3b83071ea, it was introduced in version v3.13 by commit cb32f511a70be8967ac9025cf49c44324ced9a39. For more details please see the references link.
Which versions are affected by GSD-2022-1000891?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2022-1000891?
No fix has been published for GSD-2022-1000891 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-2022-1000891 being exploited?
There is no known exploitation of GSD-2022-1000891 in the wild and no public exploit code.