CVE-2024-47895
📋 TL;DR
This vulnerability allows kernel software in a Guest VM to send improper commands to GPU firmware, potentially reading data outside the Guest's allocated GPU memory boundaries. This affects systems using Imagination Technologies GPU hardware with vulnerable firmware/drivers in virtualized environments. The impact is limited to Guest VM escape scenarios in virtualization setups.
💻 Affected Systems
- Imagination Technologies GPU hardware with vulnerable firmware/drivers
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Guest VM escape leading to host system compromise, data exfiltration from other VMs or host memory, and potential privilege escalation within the virtualization environment.
Likely Case
Information disclosure from GPU memory regions, potentially exposing sensitive data from other VMs or the host system in multi-tenant virtualized environments.
If Mitigated
Limited impact with proper virtualization isolation controls, potentially only affecting the Guest VM's own memory space if hypervisor protections are effective.
🎯 Exploit Status
Requires kernel-level access within a Guest VM and knowledge of GPU firmware interfaces. Exploitation depends on virtualization configuration and hypervisor protections.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Imagination Technologies advisory for specific patched versions
Vendor Advisory: https://www.imaginationtech.com/gpu-driver-vulnerabilities/
Restart Required: No
Instructions:
1. Check Imagination Technologies advisory for affected products. 2. Update GPU firmware and drivers to patched versions. 3. Update hypervisor GPU virtualization components if applicable. 4. Verify Guest VM GPU access is properly isolated.
🔧 Temporary Workarounds
Disable GPU passthrough
allPrevent Guest VMs from directly accessing GPU hardware
Hypervisor-specific configuration to disable GPU passthrough/virtualization
Restrict GPU access
allLimit which Guest VMs have GPU access to reduce attack surface
Configure hypervisor to only allow trusted VMs GPU access
🧯 If You Can't Patch
- Isolate GPU-enabled VMs in separate security zones with strict network segmentation
- Implement enhanced monitoring for GPU memory access patterns and hypervisor escape attempts
🔍 How to Verify
Check if Vulnerable:
Check GPU firmware/driver versions against Imagination Technologies advisory. Review virtualization configuration for GPU passthrough settings.Check Version:
System-specific commands to check GPU driver/firmware versions (e.g., lspci -v for GPU details, vendor-specific tools)Verify Fix Applied:
Verify GPU firmware/driver versions are updated to patched versions. Test Guest VM GPU memory isolation.📡 Detection & Monitoring
Log Indicators:
- Unusual GPU firmware command patterns
- Hypervisor logs showing unexpected GPU memory access
- Guest VM kernel logs with GPU-related errors
Network Indicators:
- Not network exploitable - focus on host/VM monitoring
SIEM Query:
Search for: GPU firmware access patterns, hypervisor escape attempts, Guest VM kernel privilege escalation