# CVE-2026-7639: Imagination Technologies Graphics DDK use-after-free in MMU mapping

Source: https://junglewise.ai/threats/cve-2026-7639-imagination-technologies-graphics-ddk-use-after-free-in-mmu  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-10. Updated: 2026-07-10  
License: CC BY 4.0 with a link back

CVE-2026-7639 · Severity: info · CVSS 0 · Published 2026-07-10

A vulnerability in the Imagination Technologies Graphics DDK (Driver Development Kit) allows a non-privileged user to gain unauthorized access to physical memory. By running a malicious application that makes specific improper calls to the graphics processor (GPU), an attacker can bypass security boundaries to read or write sensitive data. This could lead to a total compromise of the device's memory, potentially exposing user data or allowing for further system-level attacks.

Technologies: [Imagination Technologies Graphics DDK](https://junglewise.ai/threats/technologies/graphics-ddk). Vendors: [Imagination Technologies](https://junglewise.ai/threats/vendors/imagination-technologies).

## Quick answers

**Is CVE-2026-7639 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-7639 being exploited in the wild.

**How severe is CVE-2026-7639?** Informational severity, with a CVSS score of 0, published 10 July 2026.

**Which products and versions are affected?** Imagination Technologies Graphics DDK 1.18 RTM2, 23.2 RTM2, 24.2 RTM2, 25.1 RTM2 through 25.3 RTM, 26.1 RTM1.

**Is there a fix for CVE-2026-7639?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-7639 attacked?** It is attacked with local access, in a software library.

**Am I affected by CVE-2026-7639?** Check whether you run Imagination Technologies Graphics DDK at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A use-after-free (UAF) vulnerability exists in the Memory Management Unit (MMU) mapping logic of the Imagination Technologies Graphics DDK. A local, non-privileged attacker can trigger a failure path in the MMU mapping logic through a specific sequence of improper GPU system calls. This results in incomplete cleanup of internal driver state, facilitating unauthorized access to physical memory from shader code. The vulnerability affects Linux and Android platforms using specific DDK versions. A fix is available in version 26.1 RTM2.

## Affected products

- Imagination Technologies Graphics DDK 1.18 RTM2, 23.2 RTM2, 24.2 RTM2, 25.1 RTM2 through 25.3 RTM, 26.1 RTM1

## Timeline

- 2026-07-10: disclosed
- 2026-07-10: advisory

## References

- [https://www.imaginationtech.com/gpu-driver-vulnerabilities/](https://www.imaginationtech.com/gpu-driver-vulnerabilities/)

## Related threats

- [Imagination Technologies Graphics DDK integer overflow in PMR offset calculation](https://junglewise.ai/threats/cve-2026-16280-imagination-technologies-graphics-ddk-integer-overflow-in-pmr)
- [Imagination Technologies Graphics DDK out-of-bounds write in GPU Firmware](https://junglewise.ai/threats/cve-2026-49745-imagination-technologies-graphics-ddk-out-of-bounds-write-in-gpu)
- [Imagination Technologies Graphics DDK out-of-bounds write in GPU Firmware](https://junglewise.ai/threats/cve-2026-49744-imagination-technologies-graphics-ddk-out-of-bounds-write-in-gpu)
- [Imagination Technologies Graphics DDK use after free in kernel synchronization](https://junglewise.ai/threats/cve-2026-49743-imagination-technologies-graphics-ddk-use-after-free-in-kernel)
- [Imagination Technologies Graphics DDK TOCTOU in GPU Firmware command handling](https://junglewise.ai/threats/cve-2026-45203-imagination-technologies-graphics-ddk-toctou-in-gpu-firmware)