GSD-2022-1000921 netfilter: fix use-after-free in __nf_register_net_hook()
A use-after-free vulnerability in the Linux kernel netfilter subsystem allows local attackers with high privileges to potentially execute code or escalate privileges.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is GSD-2022-1000921?
GSD-2022-1000921 is an use after free vulnerability in Kernel, published on 18 Mar 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
netfilter: fix use-after-free in __nf_register_net_hook()
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 v4.14.270 by commit 05f7927b25d2635e87267ff6c79db79fb46cf313, it was introduced in version v4.14 by commit 2420b79f8c18a75ee2417cace381f4604b9b4365. For more details please see the references link.
Which versions are affected by GSD-2022-1000921?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2022-1000921?
No fix has been published for GSD-2022-1000921 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is GSD-2022-1000921 being exploited?
There is no known exploitation of GSD-2022-1000921 in the wild and no public exploit code.