# CVE-2026-41156: GPU DDK - kernel<->fw CCB contains SYNC_PRIMITIVE_BLOCK firmware address without holding reference

> A local attacker can exploit a use-after-free in the GPU driver to execute arbitrary code or escalate privileges on Android devices.

- **Severity:** High 7.7 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H`)
- **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:** 19 Jun 2026
- **Updated:** 22 Jun 2026
- **Also known as:** A-491024375, ASB-A-491024375, GHSA-fpwh-r7hr-w6hc

## What is CVE-2026-41156?

CVE-2026-41156 is a high-severity use after free vulnerability in Imagination Technologies Graphics DDK, published on 19 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Software installed and run as a non-privileged user may conduct improper GPU system calls to cause mismanagement of resources creating a write use after free scenario.

A shared resource (memory page) managed by a CPU thread of control (driver) and accessed by a GPU thread of control (Firmware) can cause a write UAF when the CPU thread frees the resource before the GPU FW has finished accessing it.

Weakness: CWE-416 (Use After Free)

## Which versions are affected by CVE-2026-41156?


## How do I fix CVE-2026-41156?

Apply the vendor's patch.

## Is CVE-2026-41156 being exploited?

There is no known exploitation of CVE-2026-41156 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-41156 and fix it if it is affected.

What it is: CVE-2026-41156 is a high-severity use after free vulnerability in Imagination Technologies Graphics DDK, published on 19 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-2026-41156 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-2026-41156/ (Markdown: https://insights.sbomify.com/CVE-2026-41156/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-41156
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-41156
- OSV: https://osv.dev/vulnerability/CVE-2026-41156

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-41156/
Summaries are generated and may contain mistakes; the official description above is the record.