Bug 2571378 (CVE-2026-40670)
| Summary: | CVE-2026-40670 sev-snp: sev-snp: Loss of guest memory integrity via MMIO and DRAM region overlap | ||
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| Product: | [Other] Security Response | Reporter: | OSIDB Bzimport <bzimport> |
| Component: | vulnerability-draft | Assignee: | Product Security DevOps Team <prodsec-dev> |
| Status: | NEW --- | QA Contact: | |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | unspecified | Keywords: | Security |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | --- | |
| Doc Text: |
A flaw was found in AMD Secure Encrypted Virtualization - Secure Nested Paging (SEV-SNP). Due to improper validation of exceptional conditions, a privileged local attacker can overlap memory-mapped I/O (MMIO) address ranges with dynamic random-access memory (DRAM) regions. This flaw allows an attacker to alter protected memory contents and compromise the integrity of guest virtual machines.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | Type: | --- | |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
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Description
OSIDB Bzimport
2026-11-10 22:22:06 UTC
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