CVE-2017-9059 Denial of service in n/a

Medium 5.5 Published Updated

Local users can cause a denial of service via resource consumption in the Linux kernel's NFSv4 implementation due to improper channel callback shutdown.

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-2017-9059?

CVE-2017-9059 is a medium-severity denial of service vulnerability in Linux kernel, published on 18 May 2017. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The NFSv4 implementation in the Linux kernel through 4.11.1 allows local users to cause a denial of service (resource consumption) by leveraging improper channel callback shutdown when unmounting an NFSv4 filesystem, aka a "module reference and kernel daemon" leak.

Weakness: CWE-404

Which versions are affected by CVE-2017-9059?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2017-9059?

Apply the vendor's patch.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2017-9059 being exploited?

There is no known exploitation of CVE-2017-9059 in the wild and no public exploit code.

All Linux kernel vulnerabilities

Sources

Also known as DEBIAN-CVE-2017-9059, GHSA-74pg-cp26-rfxr, UBUNTU-CVE-2017-9059.

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