CVE-2017-15826 Explained : Impact and Mitigation
Learn about CVE-2017-15826, a double free vulnerability in MDSS rotator affecting Android for MSM, Firefox OS, and QRD Android versions before 2017-10-20. Find out the impact, affected systems, and mitigation steps.
A potential vulnerability, known as a double free vulnerability, could potentially exist in MDSS rotator in Android for MSM, Firefox OS for MSM, and QRD Android versions prior to 2017-10-20. This vulnerability is caused by a race condition where two threads simultaneously attempt to free the same perf structures.
Understanding CVE-2017-15826
This CVE involves a double free vulnerability in specific Qualcomm products running on Android releases from CAF using the Linux kernel.
What is CVE-2017-15826?
CVE-2017-15826 is a double free vulnerability that affects MDSS rotator in Android for MSM, Firefox OS for MSM, and QRD Android versions before October 20, 2017.
The Impact of CVE-2017-15826
The vulnerability could allow malicious actors to exploit a race condition, leading to a potential double free vulnerability in affected systems.
Technical Details of CVE-2017-15826
This section provides detailed technical information about the vulnerability.
Vulnerability Description
The vulnerability arises due to a race condition in MDSS rotator, where two threads attempt to free the same perf structures simultaneously.
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
The vulnerability is exploited through a race condition that occurs when two threads try to free the same perf structures concurrently.
Mitigation and Prevention
To address CVE-2017-15826, follow these mitigation strategies:
Immediate Steps to Take
- Apply patches provided by Qualcomm or the respective vendors promptly.
- Monitor security bulletins for updates and advisories related to this vulnerability.
Long-Term Security Practices
- Regularly update software and firmware to the latest versions.
- Implement secure coding practices to prevent race conditions and memory-related vulnerabilities.
Patching and Updates
- Ensure that all affected systems are updated with the latest patches and security fixes to mitigate the risk of exploitation.