CVE-2018-11942 : Vulnerability Insights and Analysis

Failure to properly initialize memory in various Snapdragon platforms may lead to information exposure in WLAN.

Understanding CVE-2018-11942

What is CVE-2018-11942?

Failure to initialize allocated memory sent to firmware may expose uninitialized kernel memory in Snapdragon platforms.

The Impact of CVE-2018-11942

This vulnerability may result in the exposure of one byte of uninitialized kernel SKB memory to FW in multiple Snapdragon platforms.

Technical Details of CVE-2018-11942

Vulnerability Description

The failure to initialize memory sent to firmware can lead to information exposure in WLAN.

Affected Systems and Versions

Affected Products: Snapdragon Auto, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wired Infrastructure and Networking
Affected Versions: IPQ4019, IPQ8064, IPQ8074, MDM9150, MDM9206, MDM9607, MDM9640, MDM9650, MSM8996AU, QCS405, QCS605, SD 425, SD 427, SD 430, SD 435, SD 450, SD 625, SD 636, SD 675, SD 712 / SD 710 / SD 670, SD 730, SD 820A, SD 835, SD 845 / SD 850, SD 855, SDA660, SDM630, SDM660, SDX20, SDX24

Exploitation Mechanism

The exposure of uninitialized kernel memory occurs due to the failure to initialize memory sent to firmware.

Mitigation and Prevention

Immediate Steps to Take

Apply patches provided by Qualcomm to address the vulnerability.
Monitor Qualcomm's security bulletins for updates and advisories.

Long-Term Security Practices

Regularly update firmware and software to the latest versions.
Implement network segmentation and access controls to limit exposure.

Patching and Updates

Ensure all affected systems are updated with the latest firmware and software patches.