Description
Time-of-check Time-of-use (TOCTOU) in the BIOS2PSP command may allow an attacker with a malicious BIOS to create a race condition causing the ASP bootloader to perform out-of-bounds SRAM reads upon an S3 resume event potentially leading to a denial of service.
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected products
- AMD / Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics “Dali”/”Dali” ULPvarious – various
- AMD / Ryzen™ 2000 series Desktop Processors “Raven Ridge” AM4various – various
- AMD / Ryzen™ 2000 Series Mobile Processors “Raven Ridge” FP5various – various
- AMD / Ryzen™ 3000 Series Mobile processor, 2nd Gen AMD Ryzen™ Mobile Processors with Radeon™ Graphics “Picasso”various – various
- AMD / Ryzen™ 3000 Series Mobile Processors with Radeon™ Graphics “Renoir”various – various
- AMD / Ryzen™ 5000 Series Desktop Processor with Radeon™ Graphics “Cezanne” AM4Various – Various
- AMD / Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics “Cezanne”various – various
- AMD / Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics “Lucienne”various – various