CVE-2019-2314 : Exploit Details and Defense Strategies

A race condition in various Snapdragon platforms may lead to a use-after-free situation when writing to sysfs entries simultaneously.

Understanding CVE-2019-2314

What is CVE-2019-2314?

This CVE involves a potential race condition that can result in a use-after-free situation when writing to sysfs entries in Snapdragon platforms.

The Impact of CVE-2019-2314

The vulnerability affects multiple Snapdragon processors, potentially leading to system compromise or crashes.

Technical Details of CVE-2019-2314

Vulnerability Description

The issue arises from a race condition during simultaneous writes to sysfs entries in Snapdragon platforms.

Affected Systems and Versions

Affected Products: Snapdragon Compute, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wearables
Affected Versions: MSM8909W, QCS405, QCS605, Qualcomm 215, SD 425, SD 439 / SD 429, SD 450, SD 625, SD 632, SD 636, SD 665, SD 675, SD 712 / SD 710 / SD 670, SD 730, SD 845 / SD 850, SD 855, SDM439, SDM660, SDX20, SDX24

Exploitation Mechanism

The vulnerability can be exploited by writing to two sysfs entries simultaneously, triggering the use-after-free condition.

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 mitigate potential security risks.
Implement secure coding practices to prevent race conditions and memory-related vulnerabilities.

Patching and Updates

Ensure all affected systems are updated with the latest patches from Qualcomm to mitigate the vulnerability.