CVE-2023-4211 Arm Mali GPU Kernel Driver Use-After-Free Vulnerability
Arm Mali GPU Kernel Driver contains a use-after-free vulnerability that allows a local, non-privileged user to make improper GPU memory processing operations to gain access to already freed memory.
From the CISA KEV catalogue version 2026.11.06, with Cybergen analysis. Updated 6 Nov 2026.
Should You Worry?
- CISA confirmed exploitation in the wild and added it to the Known Exploited Vulnerabilities catalogue on 3 Oct 2023.
- Rated Medium severity (CVSS 5.5, scored by CISA).
- It has been in the catalogue for 1,130 days. Systems still unpatched now have almost certainly been scanned for it.
What It Is
A local non-privileged user can make improper GPU memory processing operations to gain access to already freed memory.
Affected Versions
| Product | Versions |
|---|---|
| Arm Ltd Midgard GPU Kernel Driver | r12p0 to r32p0 |
| Arm Ltd Bifrost GPU Kernel Driver | r0p0 to r42p0 |
| Arm Ltd Valhall GPU Kernel Driver | r19p0 to r42p0 |
| Arm Ltd Arm 5th Gen GPU Architecture Kernel Driver | r41p0 to r42p0 |
From the public CVE record, as supplied by the vendor. Always confirm against the vendor advisory.
What To Do Now
- 1
Find it
Search your asset inventory and external attack surface for Arm Mali GPU Kernel Driver. Include cloud images, appliances and anything a supplier runs for you.
Attack Surface Management - 2
Fix it
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Vulnerability Management - 3
Hunt for compromise
If an affected system was reachable before you patched, assume it may have been hit. Check logs, new accounts, web shells and outbound connections from the date of exposure.
Incident Response - 4
Prove it is fixed
Rescan or test the system after patching. Upgrades that fail silently and forgotten secondary instances are common.
Penetration Testing
The Compliance Clock
General guidance, not legal advice. Your obligations depend on your sector, scope and jurisdiction.
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