GSD-2021-1000883 NFS: Fix use-after-free in nfs4_init_client()
A use-after-free vulnerability in the Linux Kernel NFS client allows local attackers to cause a denial of service or potentially execute code.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is GSD-2021-1000883?
GSD-2021-1000883 is an use after free vulnerability in Kernel, published on 30 Jun 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
NFS: Fix use-after-free in nfs4_init_client()
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 v4.19.195 by commit 42c10b0db064e45f5c5ae7019bbf2168ffab766c, it was introduced in version v4.13 by commit 8dcbec6d20eb881ba368d0aebc3a8a678aebb1da. For more details please see the references link.
Which versions are affected by GSD-2021-1000883?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1000883?
No fix has been published for GSD-2021-1000883 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-2021-1000883 being exploited?
There is no known exploitation of GSD-2021-1000883 in the wild and no public exploit code.