# CVE-2025-13952: GPU DDK - libusc UAF via WebGPU shaders at MergeConsecutiveBarriersBP

> A use-after-free in the Android GPU shader compiler allows attackers to execute code or escalate privileges via malicious web content.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 24 Jan 2026
- **Updated:** 26 Jan 2026
- **Also known as:** A-464496427, ASB-A-464496427, GHSA-2275-6765-h9pg

## What is CVE-2025-13952?

CVE-2025-13952 is a critical use after free vulnerability in Imagination Technologies Graphics DDK, published on 24 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A web page that contains unusual GPU shader code is loaded from the Internet into the GPU compiler process triggers a write use-after-free crash in the GPU shader compiler library. On certain platforms, when the compiler process has system privileges this could enable further exploits on the device.

The shader code contained in the web page executes a path in the compiler that held onto an out of date pointer, pointing to a freed memory object.

Weakness: CWE-416 (Use After Free)

## Which versions are affected by CVE-2025-13952?

It affects 1 product.


Products: Imaginationtech Ddk.

## How do I fix CVE-2025-13952?

Apply the vendor's patch.

## Is CVE-2025-13952 being exploited?

There is no known exploitation of CVE-2025-13952 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-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)
- [CVE-2025-0467](https://insights.sbomify.com/CVE-2025-0467/): GPU DDK - rgxfw_hwperf_get_packet_buffer OOB write (high 8.2)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-13952 and fix it if it is affected.

What it is: CVE-2025-13952 is a critical use after free vulnerability in Imagination Technologies Graphics DDK, published on 24 Jan 2026. 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-2025-13952 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-2025-13952/ (Markdown: https://insights.sbomify.com/CVE-2025-13952/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-13952
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-13952
- OSV: https://osv.dev/vulnerability/CVE-2025-13952

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From sbomify Insights: https://insights.sbomify.com/CVE-2025-13952/
Summaries are generated and may contain mistakes; the official description above is the record.