# CVE-2026-34193: GPU DDK - Arbitrary write via UFO updates due insufficient pointer validation in rgxfw_to_ptr()

> A compromised host kernel can trigger arbitrary writes to GPU firmware memory via improper pointer validation, potentially leading to code execution or privilege escalation.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 1 Jun 2026
- **Updated:** 1 Jun 2026
- **Also known as:** A-496245370, ASB-A-496245370, GHSA-9j5v-4c6x-8694

## What is CVE-2026-34193?

CVE-2026-34193 is a medium-severity memory corruption vulnerability in Imagination Technologies Graphics DDK, published on 1 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Kernel software installed and running inside a Guest/Host VM may post improper commands to the GPU Firmware to trigger a write of data outside the intended GPU memory.

A logic error in the address translation allowed a compromised Host (Kernel) to perform arbitrary writes to firmware memory.

Weakness: CWE-823 (Use of Out-of-range Pointer Offset)

## Which versions are affected by CVE-2026-34193?

It affects 1 product.


Products: Imaginationtech Ddk.

## How do I fix CVE-2026-34193?

Apply the vendor's patch.

## Is CVE-2026-34193 being exploited?

There is no known exploitation of CVE-2026-34193 in the wild and no public exploit code.

## Other vulnerabilities in Imagination Technologies Graphics DDK

- [CVE-2026-16280](https://insights.sbomify.com/CVE-2026-16280/): GPU DDK - Integer overflow in _PMRLogicalOffsetToPhysicalOffset (critical 9.8)
- [CVE-2025-13952](https://insights.sbomify.com/CVE-2025-13952/): GPU DDK - libusc UAF via WebGPU shaders at MergeConsecutiveBarriersBP (critical 9.8)
- [CVE-2026-21732](https://insights.sbomify.com/CVE-2026-21732/): GPU DDK - libusc OOB write at ConvertSwitchToArrayLookupBP during WebGPU shader compilation (critical 9.6)
- [CVE-2025-25176](https://insights.sbomify.com/CVE-2025-25176/): GPU DDK - GPU Register value contents leaked from secure workloads to non-secure world (critical 9.1)
- [CVE-2025-58411](https://insights.sbomify.com/CVE-2025-58411/): GPU DDK - Reservation::psMappedPMR can change while used by a freelist -> UAF (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-34193 and fix it if it is affected.

What it is: CVE-2026-34193 is a medium-severity memory corruption vulnerability in Imagination Technologies Graphics DDK, published on 1 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-34193 in the wild and no public exploit code.

Affected product: Imagination Technologies Graphics DDK. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-34193/ (Markdown: https://insights.sbomify.com/CVE-2026-34193/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-34193
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-34193
- OSV: https://osv.dev/vulnerability/CVE-2026-34193

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-34193/
Summaries are generated and may contain mistakes; the official description above is the record.