Bug 2571379 (CVE-2026-28249)

Summary: CVE-2026-28249 sev: AMD SEV firmware: Loss of guest data integrity via cache coherency manipulation
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 AMD Secure Encrypted Virtualization (SEV) firmware. This vulnerability allows a malicious hypervisor to compromise the integrity of confidential guest virtual machines by disrupting cache coherency for guest context pages. The issue occurs due to improper preservation of consistency between independent representations of shared state in the firmware.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-11-10 22:22:10 UTC
Improper preservation of consistency between independent representations of shared state in AMD Secure Encrypted Virtualization (SEV) firmware could allow a malicious hypervisor to potentially affect cache coherency for guest context pages resulting in loss of integrity.