Description
Missing lock bit protection for NBIO registers could allow a local admin-privileged attacker to modify MMIO routing configurations, potentially resulting in loss of SEV-SNP guest integrity.
CVSS breakdown
CVSS 4.0
Attack Vector
Local
Attack Complexity
Low
Attack Requirements
None
Privileges Required
High
User Interaction
None
Confidentiality (Vulnerable System)
None
Integrity (Vulnerable System)
None
Availability (Vulnerable System)
None
Confidentiality (Subsequent System)
None
Integrity (Subsequent System)
High
Availability (Subsequent System)
None
Affected products
- AMD / AMD EPYC™ 7003 Series ProcessorsMilanPI-SP3_1.0.0.J – MilanPI-SP3_1.0.0.J
- AMD / AMD EPYC™ 8004 Series ProcessorsGenoaPI_1.0.0.H – GenoaPI_1.0.0.H
- AMD / AMD EPYC™ 9004 Series ProcessorsGenoaPI_1.0.0.H – GenoaPI_1.0.0.H
- AMD / AMD EPYC™ 9005 Series ProcessorsTurinPI_1.0.0.8 – TurinPI_1.0.0.8
- AMD / AMD EPYC™ Embedded 7003 Series ProcessorsEmbMilanPI-SP3 1.0.0.D – EmbMilanPI-SP3 1.0.0.D
- AMD / AMD EPYC™ Embedded 8004 Series ProcessorsEmbGenoaPI-SP5 1.0.0.D – EmbGenoaPI-SP5 1.0.0.D
- AMD / AMD EPYC™ Embedded 9004 Series Processors (formerly codenamed "Bergamo")EmbGenoaPI-SP5 1.0.0.D – EmbGenoaPI-SP5 1.0.0.D
- AMD / AMD EPYC™ Embedded 9004 Series Processors (formerly codenamed "Genoa")EmbGenoaPI-SP5 1.0.0.D – EmbGenoaPI-SP5 1.0.0.D
- AMD / AMD EPYC™ Embedded 9005 Series ProcessorsEmbeddedTurinPI_SP5_1004 – EmbeddedTurinPI_SP5_1004