CVE-2017-16527 : Vulnerability Insights and Analysis
Learn about CVE-2017-16527, a Linux kernel vulnerability allowing local users to trigger a denial of service through a use-after-free flaw in sound/usb/mixer.c. Find mitigation steps here.
In versions of the Linux kernel prior to 4.13.8, a vulnerability exists in the file sound/usb/mixer.c that can be exploited by local users to trigger a denial of service (DoS) condition and potentially lead to a system crash through a use-after-free flaw.
Understanding CVE-2017-16527
This CVE entry describes a vulnerability in the Linux kernel that could allow local users to cause a denial of service or potentially have other unspecified impacts by using a maliciously crafted USB device.
What is CVE-2017-16527?
The vulnerability in the Linux kernel before version 4.13.8 allows local users to exploit a use-after-free flaw in the snd_usb_mixer_interrupt function, leading to a system crash or other unspecified impacts when a crafted USB device is used.
The Impact of CVE-2017-16527
The vulnerability can result in a denial of service (DoS) condition and system crashes when triggered by local users. Additionally, there may be other unspecified impacts when a malicious USB device is utilized.
Technical Details of CVE-2017-16527
This section provides more technical insights into the vulnerability.
Vulnerability Description
The vulnerability in sound/usb/mixer.c in the Linux kernel before 4.13.8 allows local users to cause a denial of service (DoS) or potentially have other unspecified impacts via a crafted USB device.
Affected Systems and Versions
- Affected systems: Linux kernel versions prior to 4.13.8
- Affected component: sound/usb/mixer.c
- Affected users: Local users
Exploitation Mechanism
The vulnerability can be exploited by local users using a crafted USB device to trigger a denial of service (DoS) condition or potentially cause other unspecified impacts.
Mitigation and Prevention
Protecting systems from CVE-2017-16527 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Update the Linux kernel to version 4.13.8 or later to mitigate the vulnerability.
- Monitor and restrict USB device usage by untrusted users.
Long-Term Security Practices
- Implement the principle of least privilege to limit user access rights.
- Regularly monitor and audit system logs for unusual activities.
Patching and Updates
- Apply security patches promptly to ensure the system is protected against known vulnerabilities.