CVE-2025-12801: Nfs-utils: rpc.mountd in the nfs-utils privilege escalation
A vulnerability was recently discovered in the rpc.mountd daemon in the nfs-utils package for Linux, that allows a NFSv3 client to escalate the privileges assigned to it in the /etc/exports file at mount time. In particular, it allows the client to access any subdirectory or subtree of an exported directory, regardless of the set file permissions, and regardless of any 'rootsquash' or 'allsquash' attributes that would normally be expected to apply to that client.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2025-12801?
CVE-2025-12801 is classified as a privilege escalation vulnerability that poses significant risk to systems using the nfs-utils package.
How do I fix CVE-2025-12801?
To fix CVE-2025-12801, update the nfs-utils package to the latest version where the vulnerability has been patched.
Who is affected by CVE-2025-12801?
CVE-2025-12801 affects Linux systems utilizing the nfs-utils package, specifically those using the rpc.mountd daemon.
What systems are vulnerable to CVE-2025-12801?
Vulnerable systems include those running specific versions of the nfs-utils package on Linux where rpc.mountd is deployed.
What changes does CVE-2025-12801 exploit?
CVE-2025-12801 exploits the privilege assignment in the /etc/exports file, allowing unauthorized privilege escalation for NFSv3 clients.