VulnerabilityModified
CVE-2021-46755
Failure to unmap certain SysHub mappings in error paths of the ASP (AMD Secure Processor) bootloader may allow an attacker with a malicious bootloader to exhaust the SysHub resources resulting in a potential denial of service.
HIGH 7.5EPSS 0.62%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.62%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Failure to unmap certain SysHub mappings in error paths of the ASP (AMD Secure Processor) bootloader may allow an attacker with a malicious bootloader to exhaust the SysHub resources resulting in a potential denial of service.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.62% probability · 48th percentile
- CISA KEV
- Not listed
- Affected
- amd/ryzen 5500 firmware · amd/ryzen 5600 firmware · amd/ryzen 5600g firmware · amd/ryzen 5600x firmware · amd/ryzen 5700g firmware · amd/ryzen 5700x firmware · amd/ryzen 5800x3d firmware · amd/ryzen 5800x firmware · amd/ryzen 5900x firmware · amd/ryzen 5950x firmware · amd/ryzen 3100 firmware · amd/ryzen 3300x firmware · amd/ryzen 3500 firmware · amd/ryzen 3500x firmware · amd/ryzen 3600 firmware · amd/ryzen 3600x firmware · amd/ryzen 3600xt firmware · amd/ryzen 3800x firmware · amd/ryzen 3800xt firmware · amd/ryzen 3900 firmware · +3 more
- Source
- psirt@amd.com
References
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.