CVE-2021-46792

MEDIUM

AMD Ryzen Firmware - Denial of Service via BIOS2PSP Command TOCTOU Race Condition

Title source: llm
STIX 2.1

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.

References (1)

Core 1
Core References

Scores

CVSS v3 5.9
EPSS 0.0042
EPSS Percentile 62.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-367
Status published
Products (50)
amd/athlon_gold_3150g_firmware picassopi-fp5_1.0.0.4
amd/athlon_gold_3150ge_firmware picassopi-fp5_1.0.0.4
amd/athlon_silver_3050ge_firmware picassopi-fp5_1.0.0.4
amd/ryzen_1200_\(af\)_firmware pinnaclepi-am4_1.0.0.7
amd/ryzen_1200_\(af\)_firmware raven-fp5-am4_1.0.0.9
amd/ryzen_1600_\(af\)_firmware pinnaclepi-am4_1.0.0.7
amd/ryzen_1600_\(af\)_firmware raven-fp5-am4_1.0.0.9
amd/ryzen_2200g_firmware pinnaclepi-am4_1.0.0.7
amd/ryzen_2200g_firmware raven-fp5-am4_1.0.0.9
amd/ryzen_2200ge_firmware pinnaclepi-am4_1.0.0.7
... and 40 more
Published May 09, 2023
Tracked Since Feb 18, 2026