Bug 2302918 (CVE-2023-31355)

Summary: CVE-2023-31355 linux-firmware: hw:amd: Improper Restriction of Write Operations in SNP Firmware
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in the AMD firmware. This vulnerability allows a malicious hypervisor to overwrite a guest's UMC seed, potentially enabling the reading of memory from a decommissioned guest via improper restriction of write operations.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2332764, 2332765    
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Description OSIDB Bzimport 2024-08-05 16:20:32 UTC
Improper restriction of write operations in SNP firmware could allow a malicious hypervisor to overwrite a guest's UMC seed potentially allowing reading of memory from a decommissioned guest.