CVE-2024-47894
📋 TL;DR
This vulnerability allows kernel software in a Guest VM to issue improper GPU firmware commands, potentially reading data outside the guest's allocated GPU memory boundaries. It affects systems using Imagination Technologies GPU drivers in virtualized environments. The impact is limited to guest-to-host memory boundary violations rather than arbitrary code execution.
💻 Affected Systems
- Imagination Technologies GPU 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 could read sensitive host GPU memory data, potentially exposing other VM data or host system information through GPU memory artifacts.
Likely Case
Information disclosure of GPU memory contents that may contain sensitive data from other VMs or the host system, but limited to GPU-accessible memory regions.
If Mitigated
Minimal impact with proper GPU memory isolation and hypervisor protections in place, potentially just failed memory access attempts.
🎯 Exploit Status
Requires kernel-level access in guest VM and specific GPU firmware interaction; not trivial but feasible for skilled attackers.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Imagination Technologies GPU driver updates
Vendor Advisory: https://www.imaginationtech.com/gpu-driver-vulnerabilities/
Restart Required: No
Instructions:
1. Visit Imagination Technologies advisory page. 2. Download updated GPU drivers. 3. Install updated drivers in affected virtualized environments. 4. Verify GPU firmware is updated if applicable.
🔧 Temporary Workarounds
Disable GPU virtualization
allRemove GPU passthrough or virtual GPU from vulnerable VMs
Check hypervisor documentation for disabling GPU virtualization features
Isolate GPU resources
allEnsure GPU memory is properly isolated between VMs
Configure hypervisor GPU memory isolation settings
🧯 If You Can't Patch
- Isolate affected VMs from sensitive systems and networks
- Implement strict access controls to prevent unauthorized guest VM kernel access
🔍 How to Verify
Check if Vulnerable:
Check GPU driver version and virtualization configuration; consult vendor advisory for specific vulnerable versionsCheck Version:
Check GPU driver documentation for version query commands specific to your environmentVerify Fix Applied:
Verify updated GPU driver version is installed and GPU firmware commands are properly validated📡 Detection & Monitoring
Log Indicators:
- GPU firmware error logs indicating invalid memory access attempts
- Hypervisor logs showing GPU memory boundary violations
Network Indicators:
- None - local vulnerability only
SIEM Query:
Search for GPU firmware error codes or memory access violations in virtualization platform logs