CVE-2024-36323
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedImproper isolation of VCN-JPEG HW register space could allow a malicious Guest Virtual Machine (VM) or a process to perform unauthorized access to the register space of the JPEG cores assigned a victim VM/process, potentially gaining arbitrary read/write access to the victim VM/process data.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceImproper isolation in AMD VCN-JPEG hardware register space allows a malicious VM or process to access JPEG core registers assigned to other VMs or processes, potentially enabling arbitrary read/write access to victim VM/process data.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Local
- Complexity
- Low
- Privileges
- Low
- Authentication
- X
- User interaction
- None
- Scope
- X
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify AMD VCN-JPEG hardware presenceCheck for AMD VCN (Video Codec) JPEG hardware in the system. On Linux, run 'lspci | grep -i vcn' or check /proc/bus/pci/devices for AMD video codec devices. On Windows, check Device Manager under 'Display adapters' for AMD VCN components.Affected if AMD VCN-JPEG hardware is present in the system
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Verify virtualization environmentDetermine if running in a virtualized environment. On Linux, check for hypervisor with 'systemd-detect-virt' or 'dmesg | grep -i hypervisor'. On Windows, run 'systeminfo' and look for 'Hyper-V' or other hypervisor indicators in the 'Hyper-V' field.Affected if The system is running as a VM under a hypervisor, especially with AMD-V/AVIC virtualization enabled
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Check VM or process isolation configurationInspect the hypervisor or system configuration for VCN-JPEG register isolation settings. In Linux, examine /sys/class/drm/ or AMD driver files for video codec partitioning. For hypervisors, check VM configuration files for assigned VCN devices and isolation policies.Affected if VCN-JPEG hardware is exposed directly to VMs or processes without proper register space isolation configured
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Verify cross-VM register access controlsIf running a hypervisor (e.g., KVM/Xen), review the VM configuration for assigned VCN-JPEG passthrough or SR-IOV settings. Check if multiple VMs have access to the same VCN-JPEG hardware without proper IOMMU or hardware-based isolation.Affected if Multiple VMs or processes have simultaneous access to the same VCN-JPEG hardware instance without hardware-enforced register isolation
A system is affected if it has AMD VCN-JPEG hardware and runs VMs or processes that can access the JPEG core registers without proper isolation between separate tenants.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataImplement proper hardware register isolation between VMs/processes in the hypervisor or firmware, ensuring each VM/process can only access its assigned JPEG core registers.
- Consultation8.0 h
- Implementation40.0 h
- Testing16.0 h
- Review / QA8.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $20,224.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-36323 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2024-36323 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
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