GSD-2023-1000035 netfilter: conntrack: fix using __this_cpu_add in preemptible
A kernel bug in netfilter conntrack allows remote attackers to cause a denial of service via preemptible context violations.
- 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-2023-1000035?
GSD-2023-1000035 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: conntrack: 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 d9bf1138a5db419db13bd9fcd3a7178d6bb20f7c, it was introduced in version v5.19 by commit c56716c69ce1ac320432fb1ea5654196ba24d2f8. For more details please see the references link.
Which versions are affected by GSD-2023-1000035?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2023-1000035?
No fix has been published for GSD-2023-1000035 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-2023-1000035 being exploited?
There is no known exploitation of GSD-2023-1000035 in the wild and no public exploit code.