CVE-2021-46760: amd 3rd gen amd ryzen™ threadripper™ processors “castle peak” hedt

Vulnerability summary

CVE-2021-46760 is a critical (CVSS 9.8) vulnerability in amd 3rd gen amd ryzen™ threadripper™ processors “castle peak” hedt. EPSS estimates a 0.78% chance of exploitation in the next 30 days, higher than 55% of scored vulnerabilities.

Timeline

1. 09-05-2023
   PublishedVulnerability first disclosed.
2. 27-01-2025
   Last modifiedVulnerability information updated.

Description

A malicious or compromised UApp or ABL can send a malformed system call to the bootloader, which may result in an out-of-bounds memory access that may potentially lead to an attacker leaking sensitive information or achieving code execution.

• CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferThe product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
• CWE-770Allocation of Resources Without Limits or ThrottlingThe product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.