CVE-2015-8816 Denial of service in n/a

Medium 6.8 Published Updated

A physically proximate attacker can cause a system crash by unplugging a USB hub due to improper data structure maintenance in the Linux kernel.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Local or same network only
Victim action needed
Not needed
Fix
Available

What is CVE-2015-8816?

CVE-2015-8816 is a medium-severity denial of service vulnerability in Linux kernel, published on 27 Apr 2016. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The hub_activate function in drivers/usb/core/hub.c in the Linux kernel before 4.3.5 does not properly maintain a hub-interface data structure, which allows physically proximate attackers to cause a denial of service (invalid memory access and system crash) or possibly have unspecified other impact by unplugging a USB hub device.

Which versions are affected by CVE-2015-8816?

It affects 11 products.

Products include Linux kernel, Novell Suse Linux Enterprise Debuginfo, Novell Suse Linux Enterprise Desktop, Novell Suse Linux Enterprise Live Patching, Novell Suse Linux Enterprise Module for Public Cloud, Novell Suse Linux Enterprise Real Time Extension and 5 more.

How do I fix CVE-2015-8816?

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-2015-8816 being exploited?

There is no known exploitation of CVE-2015-8816 in the wild and no public exploit code.

All Linux kernel vulnerabilities

Sources

Also known as DEBIAN-CVE-2015-8816, GHSA-9h4c-rfpq-mrp2, UBUNTU-CVE-2015-8816.

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