GSD-2021-1001407 net: validate lwtstate->data before returning from skb_tunnel_info()
A missing validation in the Linux kernel network stack can cause a null pointer dereference, leading to a system crash.
- 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-2021-1001407?
GSD-2021-1001407 is a vulnerability in Kernel, published on 3 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
net: validate lwtstate->data before returning from skb_tunnel_info()
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 v4.14.241 by commit 83bdcfbd968bcc91a0632b7b625e4a9b0cba5e0d, it was introduced in version v4.3 by commit 61adedf3e3f1d3f032c5a6a299978d91eff6d555. For more details please see the references link.
Which versions are affected by GSD-2021-1001407?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1001407?
No fix has been published for GSD-2021-1001407 yet. Limit exposure of the affected software until one is available.
Is GSD-2021-1001407 being exploited?
There is no known exploitation of GSD-2021-1001407 in the wild and no public exploit code.