GSD-2023-1001016 bpf: make sure skb->len != 0 when redirecting to a tunneling device
A null pointer dereference in the Linux kernel BPF subsystem can cause a denial of service when redirecting packets to tunneling devices.
- 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-2023-1001016?
GSD-2023-1001016 is a vulnerability in Kernel, published on 17 Jan 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
bpf: make sure skb->len != 0 when redirecting to a tunneling device
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 v5.15.86 by commit 5d3f4478d22b2cb1810f6fe0f797411e9d87b3e5. For more details please see the references link.
Which versions are affected by GSD-2023-1001016?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2023-1001016?
No fix has been published for GSD-2023-1001016 yet. Limit exposure of the affected software until one is available.
Is GSD-2023-1001016 being exploited?
There is no known exploitation of GSD-2023-1001016 in the wild and no public exploit code.