CVE-2021-47322 NFSv4: Fix an Oops in pnfs_mark_request_commit() when doing O_DIRECT
A null pointer dereference in the Linux kernel NFSv4 module can cause a system crash when handling O_DIRECT writes.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-47322?
CVE-2021-47322 is a high-severity vulnerability in Linux kernel, published on 21 May 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
NFSv4: Fix an Oops in pnfs_mark_request_commit() when doing O_DIRECT
Fix an Oopsable condition in pnfs_mark_request_commit() when we're putting a set of writes on the commit list to reschedule them after a failed pNFS attempt.
Weakness: CWE-787
Which versions are affected by CVE-2021-47322?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2021-47322?
Apply the vendor's patch.
Is CVE-2021-47322 being exploited?
There is no known exploitation of CVE-2021-47322 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2021-47322, GHSA-gh9h-qjxh-2mh7, UBUNTU-CVE-2021-47322.