GSD-2022-1004747 bpf: Fix request_sock leak in sk lookup helpers
A memory leak in Linux kernel BPF socket lookup helpers can lead to resource exhaustion and denial of service.
- 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-2022-1004747?
GSD-2022-1004747 is a memory corruption vulnerability in Kernel, published on 31 Jul 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
bpf: Fix request_sock leak in sk lookup helpers
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 v5.4.202 by commit 8ffe2e50e9678c8373027492035f094b130437f1, it was introduced in version v5.2 by commit f7355a6c049711ecfbeed573e43d48bee7acb83a. For more details please see the references link.
Which versions are affected by GSD-2022-1004747?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2022-1004747?
No fix has been published for GSD-2022-1004747 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is GSD-2022-1004747 being exploited?
There is no known exploitation of GSD-2022-1004747 in the wild and no public exploit code.