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CVE-2024-21980

Description

A flaw was found in SNP firmware. This vulnerability allows a malicious hypervisor to overwrite a guest's memory or UMC seed, resulting in loss of confidentiality and integrity via improper restriction of write operations.

Statement

Red Hat has very limited to no visibility and control over binary blobs provided by third-party vendors. Red Hat relies heavily on the vendors to provide timely updates and information about included changes for this content and in most cases merely acts as a release vehicle between the third-party vendor and Red Hat customers with no possibility of influencing or even documenting the changes. Unless explicitly stated, the level of insight, oversight, and control Red Hat has does not meet the criteria required (in terms of Red Hat ownership of development processes, QA, and documentation) for releasing this content as RHSA. For more information please contact the binary content vendor.

Mitigation

Available mitigation requires to update BIOS (for updating firmware of CPU). The bug affects hardware (processors of AMD EPYC™ family).

Frequently Asked Questions

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