GSD-2023-1000037 netfilter: flowtable_offload: fix using __this_cpu_add in preemptible
A bug in the Linux kernel netfilter flowtable offload code can cause a system crash when used in preemptible contexts, leading to denial of service.
- 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-2023-1000037?
GSD-2023-1000037 is a denial of service vulnerability in Kernel, published on 17 Jan 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
netfilter: flowtable_offload: fix using __this_cpu_add in preemptible
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 v6.0.13 by commit a220a11fda012fba506b35929672374c2723ae6d, it was introduced in version v6.0 by commit b038177636f83bbf87c2b238706474145dd2cd04. For more details please see the references link.
Which versions are affected by GSD-2023-1000037?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2023-1000037?
No fix has been published for GSD-2023-1000037 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-2023-1000037 being exploited?
There is no known exploitation of GSD-2023-1000037 in the wild and no public exploit code.