GSD-2023-1002356 bpf, sockmap: Don't let sock_map_{close,destroy,unhash} call itself
A recursive call issue in the Linux kernel sockmap can cause a denial of service, requiring a kernel patch to fix.
- 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-2023-1002356?
GSD-2023-1002356 is a denial of service vulnerability in Kernel, published on 7 Mar 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
bpf, sockmap: Don't let sock_map_{close,destroy,unhash} call itself
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 v5.15.95 by commit f312367f5246e04df564d341044286e9e37a97ba. For more details please see the references link.
Which versions are affected by GSD-2023-1002356?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2023-1002356?
No fix has been published for GSD-2023-1002356 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-2023-1002356 being exploited?
There is no known exploitation of GSD-2023-1002356 in the wild and no public exploit code.