Junglewise Threat Intelligence

CVE-2023-20511: AMD kernel mode driver double free in pointer release

CVE-2023-20511 · Severity: medium · CVSS 6.4 · Published 2026-08-31

Executive brief

AMD's kernel mode driver, which manages GPU and video processing hardware, contains a flaw that allows a privileged attacker to trigger a double free condition—releasing the same memory location twice. This can lead to arbitrary code execution, giving an attacker complete control over the system. While this requires administrator-level access to exploit, the potential for system compromise makes it a significant security concern.

Technical details

The vulnerability is a double free condition in AMD's kernel mode driver (KMD), triggered by improper pointer release logic. An invalid pointer is released, allowing an attacker with elevated privileges to craft input that causes the same memory region to be freed twice. This memory corruption can be leveraged to execute arbitrary code in kernel context. Exploitation requires privileged access to the system. No patch timeline or version information is currently available in the advisory.

Affected products

  • AMD kernel mode driver

Timeline

  • 2026-08-31: disclosed

References