GSD-2021-1000142 NFS: fs_context: validate UDP retrans to prevent shift out-of-bounds
A local attacker can trigger a shift out-of-bounds error in the Linux Kernel NFS module, potentially causing a denial of service.
- 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-2021-1000142?
GSD-2021-1000142 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
NFS: fs_context: validate UDP retrans to prevent shift out-of-bounds
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 v5.10.36 by commit 96fa26b74cdcf9f5c98996bf36bec9fb5b19ffe2, it was introduced in version v5.6 by commit 9954bf92c0cddd50a2a470be302e1c1ffdf21d42. For more details please see the references link.
Which versions are affected by GSD-2021-1000142?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1000142?
No fix has been published for GSD-2021-1000142 yet. Limit exposure of the affected software until one is available.
Is GSD-2021-1000142 being exploited?
There is no known exploitation of GSD-2021-1000142 in the wild and no public exploit code.