CVE-2024-47893
📋 TL;DR
This vulnerability allows kernel software running inside a Guest Virtual Machine to exploit shared memory with GPU firmware, potentially reading or writing data outside the guest's allocated GPU memory boundaries. This affects systems using Imagination Technologies GPU hardware with vulnerable firmware/drivers in virtualized environments.
💻 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
Complete compromise of the host system from a guest VM, allowing escape from virtualization sandbox and access to other VMs or host resources.
Likely Case
Information disclosure from host or other VMs, potential data corruption, or denial of service affecting GPU functionality.
If Mitigated
Limited impact if proper isolation controls are in place, potentially only affecting the specific guest VM's performance.
🎯 Exploit Status
Exploitation requires kernel-level access within guest VM and specific knowledge of GPU memory layout.
🛠️ 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: Yes
Instructions:
1. Check Imagination Technologies advisory for affected products. 2. Update GPU firmware and drivers to patched versions. 3. Update hypervisor/VM software if applicable. 4. Restart affected systems.
🔧 Temporary Workarounds
Disable GPU passthrough
allPrevent guest VMs from accessing GPU hardware directly
Hypervisor-specific configuration changes required
Isolate GPU resources
allEnsure GPU memory is properly isolated between host and guest VMs
Configure hypervisor to enforce strict GPU memory boundaries
🧯 If You Can't Patch
- Isolate affected systems from critical networks and resources
- Implement strict access controls to prevent untrusted code execution in guest VMs
🔍 How to Verify
Check if Vulnerable:
Check GPU firmware/driver versions against Imagination Technologies advisoryCheck Version:
System-specific commands to check GPU firmware/driver versions (e.g., lspci -v for Linux)Verify Fix Applied:
Verify GPU firmware/driver versions match patched versions from vendor📡 Detection & Monitoring
Log Indicators:
- Unusual GPU memory access patterns
- Hypervisor logs showing memory boundary violations
Network Indicators:
- Not network exploitable - local vulnerability only
SIEM Query:
Search for hypervisor logs containing GPU memory access errors or boundary violations