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CVE-2023-6143: Mali GPU Kernel Driver allows improper GPU memory processing operations

• Severity: high (CVSS 8.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-03-04 · updated 2026-06-17
• Weakness: CWE-416

Description

Use After Free vulnerability in Arm Ltd Midgard GPU Kernel Driver, Arm Ltd Bifrost GPU Kernel Driver, Arm Ltd Valhall GPU Kernel Driver, Arm Ltd Arm 5th Gen GPU Architecture Kernel Driver allows a local non-privileged user to exploit a software race condition to perform improper memory processing operations. If the system’s memory is carefully prepared by the user and the system is under heavy load, then this in turn cause a use-after-free.This issue affects Midgard GPU Kernel Driver: from r13p0 through r32p0; Bifrost GPU Kernel Driver: from r1p0 through r18p0; Valhall GPU Kernel Driver: from r37p0 through r46p0; Arm 5th Gen GPU Architecture Kernel Driver: from r41p0 through r46p0.

Affected products

• Arm Ltd Arm 5th Gen GPU Architecture Kernel Driver: from r41p0 before r47p0 — fixed in r47p0
• Arm Ltd Bifrost GPU Kernel Driver: from r1p0 before r19p0 — fixed in r19p0
• Arm Ltd Midgard GPU Kernel Driver: from r13p0 through r32p0
• Arm Ltd Valhall GPU Kernel Driver: from r37p0 before r47p0 — fixed in r47p0

How to fix

Upgrade to a fixed version: Arm Ltd Arm 5th Gen GPU Architecture Kernel Driver r47p0; Arm Ltd Bifrost GPU Kernel Driver r19p0; Arm Ltd Valhall GPU Kernel Driver r47p0. Check the vendor advisory for mitigations.

References

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

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