GSD-2021-1002520 nfsd: fix use-after-free due to delegation race
A use-after-free race condition in the Linux Kernel NFS server allows attackers to potentially execute code or cause a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not stated
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is GSD-2021-1002520?
GSD-2021-1002520 is an use after free vulnerability in Kernel, published on 19 Dec 2021. It can be exploited over the network, with no action from the victim.
Official description
nfsd: fix use-after-free due to delegation race
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 v5.10.85 by commit eeb0711801f5e19ef654371b627682aed3b11373. For more details please see the references link.
Which versions are affected by GSD-2021-1002520?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1002520?
No fix has been published for GSD-2021-1002520 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-2021-1002520 being exploited?
There is no known exploitation of GSD-2021-1002520 in the wild and no public exploit code.