GSD-2021-1000467 netfilter: nftables: avoid overflows in nft_hash_buckets()
An integer overflow in the Linux kernel nftables hash bucket calculation can lead to a denial of service, requiring local access to exploit.
- 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-2021-1000467?
GSD-2021-1000467 is a 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: avoid overflows in nft_hash_buckets()
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 v4.14.233 by commit 2824cafc6a93792d9ad85939c499161214d84c4b, it was introduced in version v4.9 by commit 0ed6389c483dc77cdbdd48de0ca7ce41723dd667. For more details please see the references link.
Which versions are affected by GSD-2021-1000467?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1000467?
No fix has been published for GSD-2021-1000467 yet. Limit exposure of the affected software until one is available.
Is GSD-2021-1000467 being exploited?
There is no known exploitation of GSD-2021-1000467 in the wild and no public exploit code.