CVE-2017-2584 Use after free in n/a

High 7.1 Published 15 Jan 2017 Updated 5 Aug 2024

Local attackers can exploit a use-after-free in KVM instruction emulation to read kernel memory or crash the system.

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-2017-2584?

CVE-2017-2584 is a high-severity use after free vulnerability in Linux kernel, published on 15 Jan 2017. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

arch/x86/kvm/emulate.c in the Linux kernel through 4.9.3 allows local users to obtain sensitive information from kernel memory or cause a denial of service (use-after-free) via a crafted application that leverages instruction emulation for fxrstor, fxsave, sgdt, and sidt.

Weakness: CWE-416, CWE-200

Which versions are affected by CVE-2017-2584?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2017-2584?

Apply the vendor's patch.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2017-2584 being exploited?

There is no known exploitation of CVE-2017-2584 in the wild and no public exploit code.

All Linux kernel vulnerabilities

Sources

Also known as DEBIAN-CVE-2017-2584, GHSA-jhcg-4vw7-q849, UBUNTU-CVE-2017-2584.