CVE-2026-49745

Analyzed Analyzed - Analysis Complete

GPU Memory Write in Virtualized Environment

Publication date: 2026-07-24

Last updated on: 2026-08-12

Assigner: imaginationtech

Description

Kernel software installed and running inside a Guest VM may post improper commands to the GPU Firmware to trigger a write of data outside the Guest's virtualised GPU memory. Software installed and run under a Guest VM can send commands to the GPU which result in out of bounds memory accesses. These can be used to escalate privileges.

CVSS Scores

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Meta Information

Published

2026-07-24

Last Modified

2026-08-12

Generated

2026-08-13

AI Q&A

2026-07-24

EPSS Evaluated

2026-08-12

NVD

CVE-2026-49745

EUVD

EUVD-2026-48534

Affected Vendors & Products

Vendor	Product	Version / Range
imaginationtech	ddk	26.1
imaginationtech	ddk	to 26.1 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-823	The product performs pointer arithmetic on a valid pointer, but it uses an offset that can point outside of the intended range of valid memory locations for the resulting pointer.

Attack-Flow Graph

Executive Summary

This vulnerability involves a guest virtual machine (VM) running kernel software that sends improper commands to the GPU firmware. These commands can cause the GPU to write data outside the intended memory area of the guest VM, potentially leading to unauthorized memory access or privilege escalation.

Detection Guidance

This vulnerability involves improper GPU command posting from a Guest VM to GPU firmware, leading to out-of-bounds memory access. Detection requires monitoring GPU command streams and firmware interactions within virtualized environments. Check GPU driver logs for unexpected memory access errors or privilege escalation events. Use system monitoring tools to track GPU-related processes in VMs and host systems.

Impact Analysis

If exploited, this vulnerability could allow an attacker in a guest VM to gain elevated privileges on the host system or other VMs. This might lead to unauthorized access to sensitive data, system control, or further attacks within the environment.

Compliance Impact

This vulnerability could potentially lead to unauthorized memory access or privilege escalation within a virtualized environment. While not directly tied to GDPR or HIPAA, such breaches could result in data exposure or unauthorized access to sensitive information, which may violate compliance requirements under these regulations if exploited.

Mitigation Strategies

Disable GPU passthrough for untrusted guest VMs to prevent improper GPU command execution. Update GPU firmware to the latest version to patch known vulnerabilities. Monitor GPU-related logs for out-of-bounds memory access attempts.

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