Executive brief
AMD Ryzen Master is a utility driver that manages processor settings on AMD systems. A use-after-free vulnerability in this driver could allow a local attacker to access kernel memory, potentially causing system instability or crashes that disrupt normal operations.
Technical details
A use-after-free (UAF) vulnerability exists in the AMD Ryzen Master Utility Driver, a kernel-mode driver that handles low-level processor operations. The vulnerability occurs when the driver accesses memory that has been freed, allowing a local attacker with appropriate privileges to trigger the flaw and read or corrupt kernel memory. The attack requires local access to the system and driver functionality. Successful exploitation could result in denial of service through system crashes or potential information disclosure. A patch is expected from AMD via their product security bulletin.
Affected products
- AMD Ryzen Master Utility Driver
Timeline
- 2026-08-11: disclosed