CVE-2026-80115
Description
PassMark PerformanceTest before 11.1 build 1012, BurnInTest before 11.1 build 1000, and OSForensics before 11.1 build 1016 contain a privilege escalation and denial-of-service vulnerability in DirectIo64.sys that allows local attackers to read arbitrary Model-Specific Registers or write zero to any MSR through exposed IOCTLs with insufficient blocklist enforcement. Attackers can exploit the unrestricted write IOCTL to zero out the system call handler MSR, causing an immediate unrecoverable kernel crash on the next system call, or read security-sensitive MSRs used to locate kernel data structures.
How to fix
- PassMark Software PerformanceTest11.1 build 1012 or later
- PassMark Software BurnInTest11.1 build 1000 or later
- PassMark Software OSForensics11.1 build 1016 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| PassMark Software PerformanceTest | v < 11.1 build 1012 | 11.1 build 1012 |
| PassMark Software BurnInTest | v < 11.1 build 1000 | 11.1 build 1000 |
| PassMark Software OSForensics | v < 11.1 build 1016 | 11.1 build 1016 |
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