CVE-2022-50385 NFS: Fix an Oops in nfs_d_automount()

Medium 5.5 Published Updated

A null pointer dereference in the Linux kernel NFS automount handler allows local attackers to cause a system crash.

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-2022-50385?

CVE-2022-50385 is a medium-severity vulnerability in Linux kernel, published on 18 Sep 2025. 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:

NFS: Fix an Oops in nfs_d_automount()

When mounting from a NFSv4 referral, path->dentry can end up being a negative dentry, so derive the struct nfs_server from the dentry itself instead.

Which versions are affected by CVE-2022-50385?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2022-50385?

Apply the vendor's patch.

Is CVE-2022-50385 being exploited?

There is no known exploitation of CVE-2022-50385 in the wild and no public exploit code.

All Linux kernel vulnerabilities

Sources

Also known as DEBIAN-CVE-2022-50385, GHSA-gmx5-vgh2-2g4v, UBUNTU-CVE-2022-50385.

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