# CVE-2026-41157: GPU DDK - OOB Write in CalculateNPOTTwiddleSparsePageMap3D

> An out-of-bounds write in the GPU driver triggered by malicious WebGPU content can cause memory corruption, leading to browser crashes or potential code execution.

- **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:** 12 Jun 2026
- **Updated:** 16 Jun 2026
- **Also known as:** A-496269893, ASB-A-496269893, GHSA-2m3r-7r37-rw4c

## What is CVE-2026-41157?

CVE-2026-41157 is a critical memory corruption vulnerability in Imagination Technologies Graphics DDK, published on 12 Jun 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 WebGPU content loaded into the GPU GLES render process and can trigger an out-of-bound write in the GPU user-space driver, leading to memory corruption and possible browser/GPU process crash.

The software computes a required memory size from untrusted input, but integer overflow can produce a value smaller than needed. Subsequent write operations may then occur past the intended memory boundary, corrupting adjacent memory and causing process instability or termination.

Weakness: CWE-787 (Out-of-bounds Write)

## Which versions are affected by CVE-2026-41157?


## How do I fix CVE-2026-41157?

Apply the vendor's patch.

## Is CVE-2026-41157 being exploited?

There is no known exploitation of CVE-2026-41157 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-41157 and fix it if it is affected.

What it is: CVE-2026-41157 is a critical memory corruption vulnerability in Imagination Technologies Graphics DDK, published on 12 Jun 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-2026-41157 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-2026-41157/ (Markdown: https://insights.sbomify.com/CVE-2026-41157/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-41157
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-41157
- OSV: https://osv.dev/vulnerability/CVE-2026-41157

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-41157/
Summaries are generated and may contain mistakes; the official description above is the record.