SB2017101042 - Double Free in Google, Google Android
Published: October 10, 2017 Updated: August 8, 2020
Security Bulletin ID
SB2017101042
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Double Free (CVE-ID: CVE-2017-9687)
The vulnerability allows a local authenticated user to execute arbitrary code.
In Android for MSM, Firefox OS for MSM, QRD Android, with all Android releases from CAF using the Linux kernel, two concurrent threads/processes can write the value of "0" to the debugfs file that controls ipa ipc log which will lead to the double-free in ipc_log_context_destroy(). Another issue is the Use-After-Free which can happen due to the race condition when the ipc log is deallocated via the debugfs call during a log print.
Remediation
Install update from vendor's website.