Bug 2571373 (CVE-2026-0435)

Summary: CVE-2026-0435 sev-firmware: sev-firmware: Guest data compromise via unauthorized device substitution
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerability-draftAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in the AMD Secure Encrypted Virtualization (SEV) firmware. A local attacker with administrative privileges could compromise the confidentiality and integrity of guest virtual machine data. By operating on resources after their release, an attacker can silently swap out an assigned guest device without the guest's knowledge.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-11-10 22:21:41 UTC
Operation on a resource after expiration or release in the AMD Secure Encrypted Virtualization (SEV) firmware could allow an attacker with administrative privileges to swap out a guest device without the guest's knowledge, potentially resulting in a loss of confidentiality and integrity.