CVE-2017-16648 : Security Advisory and Response

In the Linux kernel up to version 4.13.11, a vulnerability exists in the dvb_frontend_free function that can be exploited by local users, potentially leading to a denial of service. This CVE was published on November 7, 2017.

Understanding CVE-2017-16648

This CVE affects the Linux kernel up to version 4.13.11 and involves a vulnerability in the dvb_frontend_free function.

What is CVE-2017-16648?

The dvb_frontend_free function in the Linux kernel allows local users to trigger a denial of service or other impacts by using a manipulated USB device. The function was later renamed to __dvb_frontend_free.

The Impact of CVE-2017-16648

The vulnerability can result in a system crash or other potential impacts when exploited by local users.

Technical Details of CVE-2017-16648

This section provides more technical insights into the vulnerability.

Vulnerability Description

The dvb_frontend_free function in drivers/media/dvb-core/dvb_frontend.c in the Linux kernel through 4.13.11 allows local users to cause a denial of service or system crash via a crafted USB device.

Affected Systems and Versions

Affected System: Linux kernel up to version 4.13.11
Affected Function: dvb_frontend_free

Exploitation Mechanism

The vulnerability can be exploited by local users using a manipulated USB device.

Mitigation and Prevention

To address CVE-2017-16648, follow these mitigation strategies:

Immediate Steps to Take

Apply relevant patches and updates promptly
Monitor and restrict USB device usage

Long-Term Security Practices

Implement least privilege access controls
Regularly update and patch the Linux kernel

Patching and Updates

Ensure timely installation of security patches and updates to mitigate the risk of exploitation.