CVE-2019-10529 : Exploit Details and Defense Strategies

A use after free problem due to a race condition in Qualcomm platforms affecting various Snapdragon chipsets.

Understanding CVE-2019-10529

What is CVE-2019-10529?

This CVE involves a use after free issue resulting from a race condition when marking entry pages as dirty using the set_page_dirty() function in Qualcomm platforms.

The Impact of CVE-2019-10529

This vulnerability affects a wide range of Qualcomm chipsets across different Snapdragon product lines, potentially leading to security breaches and system compromise.

Technical Details of CVE-2019-10529

Vulnerability Description

The issue arises from a race condition while indicating entry pages as dirty, causing a use after free problem in Snapdragon Auto, Compute, Consumer IOT, Industrial IOT, IoT, Mobile, Voice & Music, and Wearables.

Affected Systems and Versions

Vendor: Qualcomm, Inc.
Affected Products: Snapdragon Auto, Compute, Consumer IOT, Industrial IOT, IoT, Mobile, Voice & Music, Wearables
Affected Versions: MDM9150, MDM9206, MDM9607, MDM9640, MDM9650, MSM8909W, MSM8996AU, QCS405, QCS605, Qualcomm 215, SD series (210/212/205/425/439/429/450/615/16/415/625/632/636/665/675/712/710/670), SD series (730/820/820A/835/845/850/855), SDA660, SDM439, SDM630, SDM660, SDX20, SDX24

Exploitation Mechanism

The vulnerability occurs due to a race condition while trying to mark entry pages as dirty, potentially leading to a use after free issue.

Mitigation and Prevention

Immediate Steps to Take

Apply security patches provided by Qualcomm promptly.
Monitor Qualcomm's security bulletins for updates and advisories.

Long-Term Security Practices

Regularly update firmware and software to the latest versions.
Implement secure coding practices to prevent similar vulnerabilities.

Patching and Updates

Ensure all affected systems are updated with the latest patches from Qualcomm to mitigate the risk of exploitation.