GSD-2021-1000659 NFS: Don't corrupt the value of pg_bytes_written in nfs_do_recoalesce()
A bug in the Linux Kernel NFS client corrupts a byte counter, potentially leading to denial of service or data integrity issues during re-coalescing.
- 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-2021-1000659?
GSD-2021-1000659 is a vulnerability in Kernel, published on 4 Jun 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
NFS: Don't corrupt the value of pg_bytes_written in nfs_do_recoalesce()
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 v4.19.193 by commit 40f139a6d50c232c0d1fd1c5e65a845c62db0ede, it was introduced in version v4.0 by commit a7d42ddb3099727f58366fa006f850a219cce6c8. For more details please see the references link.
Which versions are affected by GSD-2021-1000659?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1000659?
No fix has been published for GSD-2021-1000659 yet. Limit exposure of the affected software until one is available.
Is GSD-2021-1000659 being exploited?
There is no known exploitation of GSD-2021-1000659 in the wild and no public exploit code.