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CVE-2023-26083: Arm Mali GPU Kernel Driver Information Disclosure Vulnerability

• Severity: low (CVSS 3.3 v3.1)
• Exploited in the wild: yes — in CISA KEV since 2023-04-07
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-04-06 · updated 2026-06-17
• Weakness: CWE-401

Description

Memory leak vulnerability in Mali GPU Kernel Driver in Midgard GPU Kernel Driver all versions from r6p0 - r32p0, Bifrost GPU Kernel Driver all versions from r0p0 - r42p0, Valhall GPU Kernel Driver all versions from r19p0 - r42p0, and Avalon GPU Kernel Driver all versions from r41p0 - r42p0 allows a non-privileged user to make valid GPU processing operations that expose sensitive kernel metadata.

Affected products

• Arm Ltd Arm 5th Gen GPU Architecture Kernel Driver: from r41p0 before r43p0 — fixed in r43p0
• Arm Ltd Bifrost GPU Kernel Driver: from r0p0 before r43p0 — fixed in r43p0
• Arm Ltd Midgard GPU Kernel Driver: from r6p0 through r32p0
• Arm Ltd Valhall GPU Kernel Driver: from r19p0 before r43p0 — fixed in r43p0

How to fix

Upgrade to a fixed version: Arm Ltd Arm 5th Gen GPU Architecture Kernel Driver r43p0; Arm Ltd Bifrost GPU Kernel Driver r43p0; Arm Ltd Valhall GPU Kernel Driver r43p0. Check the vendor advisory for mitigations.

References

• https://developer.arm.com/Arm%20Security%20Center/Mali%20GPU%20Driver%20Vulnerabilities
• https://www.cybersecurity-help.cz/vdb/SB2023033049
• https://www.cybersecurity-help.cz/vulnerabilities/74210/
• https://developer.arm.com/Arm%20Security%20Center/Mali%20GPU%20Driver%20Vulnerabilities
• https://www.cybersecurity-help.cz/vdb/SB2023033049
• https://www.cybersecurity-help.cz/vulnerabilities/74210/
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-26083

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