CVE-2021-46795

CWE-3674 documents4 sources
Severity
4.7MEDIUM
EPSS
0.0%
top 87.40%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
5
AMD Cezannepi-fp6 FirmwareAMD Comboam4v2 PI FirmwareAMD Renoirpi-fp6 Firmware+2 more
Timeline
PublishedJan 11

Description

A TOCTOU (time-of-check to time-of-use) vulnerability exists where an attacker may use a compromised BIOS to cause the TEE OS to read memory out of bounds that could potentially result in a denial of service.

CVSS vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.0 | Impact: 3.6

Affected Packages5 packages

▶CVEListV5amd/ryzen_3000_seriesvarious
▶CVEListV5amd/ryzen_5000_seriesvarious

🔴Vulnerability Details

2
GHSA
GHSA-wfj9-288h-5mpm: A TOCTOU (time-of-check to time-of-use) vulnerability exists where an attacker may use a compromised BIOS to cause the TEE OS to read memory out of bo↗2023-01-11
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CVEList
CVE-2021-46795: A TOCTOU (time-of-check to time-of-use) vulnerability exists where an attacker may use a compromised BIOS to cause the TEE OS to read memory out of bo↗2023-01-10
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📋Vendor Advisories

1
Red Hat
hw: amd: TOCTOU (time-of-check to time-of-use) vulnerability cause memory out of bound results in a denial of service↗2023-01-10
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CVE-2021-46795 (MEDIUM CVSS 4.7) | A TOCTOU (time-of-check to time-of- | cvebase.io