TrendLabs: CVE-2019-8635: Double Free Vulnerability in Apple macOS Lets Attackers Escalate System Privileges and Execute Arbitrary Code

Figure 2. The pseudo code snippet of IOAccelContext2::processSidebandBuffer

REF: https://blog.trendmicro.com/trendlabs-security-intelligence/cve-2019-8635-double-free-vulnerability-in-apple-macos-lets-attackers-escalate-system-privileges-and-execute-arbitrary-code/