CVE-2018-5904 : Exploit Details and Defense Strategies

Android Linux Kernel Use After Free Vulnerability

Understanding CVE-2018-5904

This CVE involves a potential use after free vulnerability in the Linux kernel used in various Android releases, including Android for MSM, Firefox OS for MSM, and QRD Android from CAF.

What is CVE-2018-5904?

When conducting list traversal in the LPM status driver during cleanup, a use after free vulnerability may occur in the Linux kernel used in specific Android releases.

The Impact of CVE-2018-5904

The vulnerability could be exploited by attackers to execute arbitrary code or cause a denial of service (DoS) condition on the affected systems.

Technical Details of CVE-2018-5904

Vulnerability Description

The vulnerability arises due to improper handling of memory resources during list traversal in the LPM status driver, potentially leading to a use after free scenario.

Affected Systems and Versions

Android for MSM
Firefox OS for MSM
QRD Android from CAF

Exploitation Mechanism

Attackers can exploit this vulnerability by manipulating the list traversal process in the LPM status driver, triggering a use after free condition.

Mitigation and Prevention

Immediate Steps to Take

Apply patches provided by the vendor promptly.
Monitor vendor security bulletins for updates.
Implement strict access controls to limit system exposure.

Long-Term Security Practices

Regularly update and patch all software components.
Conduct security assessments and audits periodically.
Educate users on safe computing practices to prevent exploitation.

Patching and Updates

Ensure that the affected systems are updated with the latest patches and security fixes to mitigate the risk of exploitation.