---
id: "CVE-2026-18629"
kind: "vulnerability"
aliases: ["CVE-2026-18629"]
title: "Browser GPU shader compiler: integer overflow lets a web page crash the compiler"
severity: "unknown"
cvss: null
epss: null
exploited: false
status: "open"
category: "runtime"
products: []
ecosystems: []
tags: ["browser", "gpu", "runtime", "webgl"]
not_affected_if: []
published_at: "2026-10-30T02:17:09+00:00"
first_seen_at: "2026-10-30T02:28:05+00:00"
updated_at: "2026-10-30T02:30:15+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-18629", "first_seen_at": "2026-10-30T02:28:05+00:00"}]
---

# Browser GPU shader compiler: integer overflow lets a web page crash the compiler

A web page with specially crafted GPU shader code can trigger an integer overflow in the GPU compiler process, causing a memory allocation failure and a NULL pointer dereference. The compiler process crashes, and on certain platforms running with system privileges this could lead to further exploitation of the device.

_Summary, check and fix written by a model from the sources; labelled as such._

## Timeline

- 2026-10-30T02:28:05+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-18629

## From the sources

A web page that contains unusual GPU shader code is loaded into the GPU compiler process and can lead memory allocation failure. If the allocation failure is not properly handled, the compiler may dereference a NULL pointer at a controlled offset, resulting in a crash of the compiler process. On certain platforms, when the compiler process has system privileges this could lead to crashes or enable further exploits on the device.



The weakness results from performing arithmetic operations on values derived from the shader program without properly preventing integer overflow. The overflow can cause incorrect memory size calculations, leading to memory allocation failures and subsequent invalid program behaviour. Integer overflow can produce unexpected values that affect memory allocation and other security-relevant operations.

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