GSD-2021-1000565 netfilter: nft_set_pipapo_avx2: Add irq_fpu_usable() check, fallback to non-AVX2 version
Missing FPU usability check in netfilter AVX2 code can cause kernel crashes, leading to denial of service.
- 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-2021-1000565?
GSD-2021-1000565 is a denial of service vulnerability in Kernel, published on 4 Jun 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
netfilter: nft_set_pipapo_avx2: Add irq_fpu_usable() check, fallback to non-AVX2 version
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 v5.12.9 by commit 727a2b4fc951ee69847d4904d98961856ea9fbe6, it was introduced in version v5.7 by commit 7400b063969bdca4a06cd97f1294d765c8eecbe1. For more details please see the references link.
Which versions are affected by GSD-2021-1000565?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1000565?
No fix has been published for GSD-2021-1000565 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is GSD-2021-1000565 being exploited?
There is no known exploitation of GSD-2021-1000565 in the wild and no public exploit code.