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    CVE-2021-28663

    The Arm Mali GPU kernel driver allows privilege escalation or information disclosure because GPU memory operations are mishandled, leading to a use-after-free. This affects Bifrost r0p0 through r28p0 before r29p0, Valhall r19p0 through r28p0 before r29p0, and Midgard r4p0 through r30p0.

    Published:May 10, 2021
    Last Modified:Nov 3, 2025
    EPS:May 10, 2021
    EPSS Score:0.03042
    CVSS Score:8.8

    CISA Notification

    Description

    The Arm Mali GPU kernel driver allows privilege escalation or information disclosure because GPU memory operations are mishandled, leading to a use-after-free. This affects Bifrost r0p0 through r28p0 before r29p0, Valhall r19p0 through r28p0 before r29p0, and Midgard r4p0 through r30p0.

    Required Action:

    Apply updates per vendor instructions.

    Notes:

    No extra notes provided.

    Due Date
    Nov 17, 2021
    1759 days ago
    Alert Date
    Nov 3, 2021
    1773 days ago

    Affected Products

    Vendor
    Arm
    Product
    Bifrost Gpu Kernel Driver
    Vendor
    Arm
    Product
    Midgard Gpu Kernel Driver
    Vendor
    Arm
    Product
    Valhall Gpu Kernel Driver

    Exploits

    https://github.com/lntrx/CVE-2021-28663https://github.com/lntrx/CVE-2021-28663https://github.com/lntrx/CVE-2021-28663

    Common Weakness Enumeration

    CWE-416 Use After Free

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-12387 (CVSS 5.1) — Use After Free vulnerability in Arm Ltd Bifrost GPU Kernel Driver, Arm Ltd Valhall GPU Kernel Driver, Arm Ltd …
    CVE-2026-12285 (CVSS 4) — Use After Free vulnerability in Arm Ltd Bifrost GPU Kernel Driver, Arm Ltd Valhall GPU Kernel Driver, Arm Ltd …
    CVE-2026-9040 (CVSS 7.7) — A race condition vulnerability in Arm Ltd Bifrost GPU Kernel Driver, Arm Ltd Valhall GPU Kernel Driver, Arm Lt…
    CVE-2026-7477 (CVSS 7.8) — Use After Free vulnerability in Arm Ltd Bifrost GPU Kernel Driver, Arm Ltd Valhall GPU Kernel Driver, Arm Ltd …
    CVE-2026-7476 (CVSS 7.8) — Use After Free vulnerability in Arm Ltd Bifrost GPU Kernel Driver, Arm Ltd Valhall GPU Kernel Driver, Arm Ltd …
    CVE-2026-0001 (CVSS 4.4) — Use After Free vulnerability in Arm Ltd Bifrost GPU Kernel Driver, Arm Ltd Valhall GPU Kernel Driver, Arm Ltd …
    CVE-2025-3212 (CVSS 5.3) — Use After Free vulnerability in Arm Ltd Bifrost GPU Kernel Driver, Arm Ltd Valhall GPU Kernel Driver, Arm Ltd …
    CVE-2025-0819 (CVSS 7.8) — Use After Free vulnerability in Arm Ltd Bifrost GPU Kernel Driver, Arm Ltd Valhall GPU Kernel Driver, Arm Ltd …
    CVE-2025-0427 (CVSS 7.8) — Use After Free vulnerability in Arm Ltd Bifrost GPU Kernel Driver, Arm Ltd Valhall GPU Kernel Driver, Arm Ltd …
    CVE-2024-6790 (CVSS 6.1) — Loop with Unreachable Exit Condition ('Infinite Loop') vulnerability in Arm Ltd Bifrost GPU Kernel Driver, Arm…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High