AMD Ryzen Master and Radeon Software vulnerabilities
To make matters worse, there is a third security vulnerability confirmed by AMD in a span of just one week. On October 7th AMD reported on the “CreateAllocation” issue, a potential security concern in AMD graphics driver. AMD has not yet provided a fix for this issue and it is expected in the first quarter of 2021.
Today AMD reported on another issue discovered in AMD graphics drivers (Radeon Software Adrenalin) called “EscapeHandler”. The new issue can result in a blue screen, but unlike CreateAllcation it was already fixed with the recent driver update.
A third issue affects AMD Ryzen Master, the overclocking and fine-tuning tool for AMD Ryzen processors. The issue may allow authenticated users to elevate from user to system privileges. AMD has already confirmed the issue and provided a hotfix in Ryzen Master 2.2.0.1543.
It is worth noting that two of the vulnerabilities were discovered by Cisco Talos intelligence and security experts.
| AMD October 2020 Security Vulnerabilities | |||
|---|---|---|---|
| Vulnerability | CVE code | Affected | Fix |
| CreateAllocation | CVE-2020-12911 | AMD graphics driver | Coming Q1 2020 |
| AMD Ryzen Master™ Driver Vulnerability | CVE-2020-12928 | AMD Ryzen Master | Fixed in the latest release |
| Escape Handler | CVE-2020-12933 | AMD graphics driver | Fixed in the latest release |
CreateAllocation (CVE-2020-12911)
10/7/2020
Our ecosystem collaborator Cisco Talos has published a new potential vulnerability in AMD graphics drivers, which may result in a blue screen. AMD believes that confidential information and long-term system functionality are not impacted, and that the user can resolve the issue by restarting the computer. AMD plans to issue updated graphics drivers to address the issue in the first quarter of 2021.
The research finds that a specially crafted D3DKMTCreateAllocation API request can cause an out-of-bounds read and denial of service (BSOD). This vulnerability can be triggered from non-privileged accounts.
We thank the researchers for their ongoing collaboration and coordinated disclosure.
AMD Ryzen Master™ Driver Vulnerability (CVE-2020-12928)
10/13/2020
A researcher has discovered a potential security vulnerability impacting AMD Ryzen™ Master that may allow authenticated users to elevate from user to system privileges. AMD has released a mitigation in AMD Ryzen Master 2.2.0.1543. AMD believes that the attack must come from a non-privileged process already running on the system when the local user runs AMD Ryzen™ Master and that a remote attack has not been demonstrated.
We thank the researcher for the ongoing collaboration and coordinated disclosure.
Escape Handler (CVE-2020-12933)
10/13/2020
Our ecosystem collaborator Cisco Talos has published a new potential vulnerability in AMD graphics drivers, which may result in a blue screen. The issue was addressed in Radeon™ Software Adrenalin 2020 Edition.
AMD believes that confidential information and long-term system functionality are not impacted, and users can resolve the issue by restarting the computer.
A specially crafted D3DKMTEscape request can cause an out-of-bounds read in Windows OS kernel memory area. This vulnerability can be triggered from a non-privileged account.
We thank the researchers for their ongoing collaboration and coordinated disclosure.
Source: AMD
