CVE Vulnerabilities

CVE-2021-46792

Time-of-check Time-of-use (TOCTOU) Race Condition

Published: May 09, 2023 | Modified: May 22, 2023
CVSS 3.x
5.9
MEDIUM
Source:
NVD
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
RedHat/V2
RedHat/V3
Ubuntu

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.

Weakness

The product checks the state of a resource before using that resource, but the resource’s state can change between the check and the use in a way that invalidates the results of the check. This can cause the product to perform invalid actions when the resource is in an unexpected state.

Affected Software

Name Vendor Start Version End Version
Ryzen_5300g_firmware Amd cezannepi-fp6_1.0.0.6 (including) cezannepi-fp6_1.0.0.6 (including)

Potential Mitigations

References