CVE-2023-20587

A vulnerability was found in AMD hardware due to improper access control in System Management Mode (SMM). This issue could allow a local unauthenticated attacker to execute arbitrary code.

The PSP and AEGIS vulnerabilities necessitate a BIOS update, as they are not inherent to the CPU and cannot be addressed through CPU microcode updates. This requires a UEFI firmware update from the device vendor, distinct from updates in the linux-firmware package. Therefore, linux-firmware on Red Hat Enterprise Linux is marked as not affected.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.