CVE-2021-47064

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    CVE-2021-47064

    Published: 29 Feb 2024Last Modified: 15 Mar 2026

    Summary:

    Details: In the Linux kernel, the following vulnerability has been resolved: mt76: fix potential DMA mapping leak With buf uninitialized in mt76_dma_tx_queue_skb_raw, its field skip_unmap could potentially inherit a non-zero value from stack garbage. If this happens, it will cause DMA mappings for MCU command frames to not be unmapped after completion

    References: https://git.kernel.org/stable/c/91b9548d413fda488ea853cd1b9f59b572db3a0c, https://git.kernel.org/stable/c/9b68ce2856dadc0e1cb6fd21fbeb850da49efd08, https://git.kernel.org/stable/c/9fa26701cd1fc4d932d431971efc5746325bdfce, https://git.kernel.org/stable/c/b4403cee6400c5f679e9c4a82b91d61aa961eccf

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    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
    CVE-2021-47064 | CVE-DB