GSD-2021-1000209 netfilter: nftables: Fix a memleak from userdata error path in new objects
A memory leak in the Linux kernel nftables subsystem allows local attackers to cause denial of service by exhausting system memory.
- 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-2021-1000209?
GSD-2021-1000209 is a memory corruption vulnerability in Kernel, published on 31 May 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
netfilter: nftables: Fix a memleak from userdata error path in new objects
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 v5.12.5 by commit dd3bebf515f336214a91994348a2b86b9a1d3d7f, it was introduced in version v5.10 by commit b131c96496b369c7b14125e7c50e89ac7cec8051. For more details please see the references link.
Which versions are affected by GSD-2021-1000209?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1000209?
No fix has been published for GSD-2021-1000209 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-2021-1000209 being exploited?
There is no known exploitation of GSD-2021-1000209 in the wild and no public exploit code.