# CVE-2025-46709: GPU DDK - Security fix for PP-171570 can lead to an uninitialised pointer dereference and memory leak

> Attackers can trigger kernel exceptions or leak heap data via uninitialised pointer dereference in Imagination Technologies GPU drivers.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 8 Aug 2025
- **Updated:** 11 Aug 2025
- **Also known as:** GHSA-g442-cv6p-6f3m

## What is CVE-2025-46709?

CVE-2025-46709 is a high-severity use after free vulnerability in Imagination Technologies Graphics DDK, published on 8 Aug 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Possible memory leak or kernel exceptions caused by reading kernel heap data after free or NULL pointer dereference kernel exception.

Weakness: CWE-416 (Use After Free)

## Which versions are affected by CVE-2025-46709?

It affects 1 product.


Products: Imaginationtech Ddk.

## How do I fix CVE-2025-46709?

No fix has been published for CVE-2025-46709 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-46709 being exploited?

There is no known exploitation of CVE-2025-46709 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-2025-46709 and fix it if it is affected.

What it is: CVE-2025-46709 is a high-severity use after free vulnerability in Imagination Technologies Graphics DDK, published on 8 Aug 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-46709 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-2025-46709/ (Markdown: https://insights.sbomify.com/CVE-2025-46709/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-46709
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-46709
- OSV: https://osv.dev/vulnerability/CVE-2025-46709

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From sbomify Insights: https://insights.sbomify.com/CVE-2025-46709/
Summaries are generated and may contain mistakes; the official description above is the record.