CVE-2018-11840 : What You Need to Know

Android for MSM, Firefox OS for MSM, and QRD Android developed by Qualcomm, Inc. using the Linux kernel may experience a double free vulnerability in the WLAN driver command ioctl processing.

Understanding CVE-2018-11840

This CVE involves a potential double free issue in WLAN driver command ioctl processing in Android releases from CAF using the Linux kernel.

What is CVE-2018-11840?

In Android versions developed by CAF using the Linux kernel, a temporary buffer responsible for constructing reply messages during WLAN driver command ioctl processing might be released twice.

The Impact of CVE-2018-11840

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

Technical Details of CVE-2018-11840

This section provides more in-depth technical insights into the vulnerability.

Vulnerability Description

The issue arises from a double free vulnerability in the WLAN driver command ioctl processing, potentially leading to memory corruption.

Affected Systems and Versions

Product: Android for MSM, Firefox OS for MSM, QRD Android
Vendor: Qualcomm, Inc.
Versions: All Android releases from CAF using the Linux kernel

Exploitation Mechanism

Attackers could exploit this vulnerability by crafting malicious input to trigger the double free condition, potentially leading to code execution or DoS.

Mitigation and Prevention

To address CVE-2018-11840, follow these mitigation strategies:

Immediate Steps to Take

Apply patches provided by the vendor promptly.
Monitor vendor security bulletins for updates.
Implement network segmentation to limit the impact of potential attacks.

Long-Term Security Practices

Regularly update and patch all software components.
Conduct security assessments and audits to identify vulnerabilities.
Educate users and administrators on secure coding practices.

Patching and Updates

Keep all software and firmware up to date to ensure the latest security fixes are in place.