Bug 2571344 (CVE-2025-54503)

Summary: CVE-2025-54503 linux-firmware: linux-firmware: Loss of guest memory integrity via improper SEV memory range handling
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: unspecifiedCC: akhatavk, aos-team-art-private, asdas, dpaolell, jdelft, jupierce, lgarciaa, mbiarnes, ppalepu, ppostler, prdhamdh, rhel-process-autobot, sghai, sidsharm, suppawar, vlaad, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in linux-firmware. Improper handling of overlapping protected memory ranges in the AMD Secure Encrypted Virtualization (SEV) firmware allows a privileged local attacker to cause misconfigurations in the Reverse Map Table (RMP). Consequently, this flaw can allow an attacker to compromise the memory integrity of secure virtual machines.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Description OSIDB Bzimport 2026-11-10 21:52:13 UTC
Improper handling of overlap between protected memory ranges in the Secure Encrypted Virtualization (SEV) firmware could allow a privileged attacker to cause misconfigurations in the RMP potentially resulting in loss of integrity.