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    CVE-2021-22600

    A double free bug in packet_set_ring() in net/packet/af_packet.c can be exploited by a local user through crafted syscalls to escalate privileges or deny service. We recommend upgrading kernel past the effected versions or rebuilding past ec6af094ea28f0f2dda1a6a33b14cd57e36a9755

    Published:Dec 15, 2021
    Last Modified:Oct 24, 2025
    EPS:Jan 26, 2022
    EPSS Score:0.00082
    CVSS Score:6.6

    CISA Notification

    Description

    A double free bug in packet_set_ring() in net/packet/af_packet.c can be exploited by a local user through crafted syscalls to escalate privileges or deny service. We recommend upgrading kernel past the effected versions or rebuilding past ec6af094ea28f0f2dda1a6a33b14cd57e36a9755

    Required Action:

    Apply updates per vendor instructions.

    Notes:

    No extra notes provided.

    Due Date
    May 2, 2022
    1593 days ago
    Alert Date
    Apr 11, 2022
    1614 days ago

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Linux
    Product
    Linux Kernel
    Vendor
    Netapp
    Product
    8300
    Vendor
    Netapp
    Product
    8300 Firmware
    Vendor
    Netapp
    Product
    8700
    Vendor
    Netapp
    Product
    8700 Firmware
    Vendor
    Netapp
    Product
    A400
    Vendor
    Netapp
    Product
    A400 Firmware
    Vendor
    Netapp
    Product
    C400
    Vendor
    Netapp
    Product
    C400 Firmware
    Vendor
    Netapp
    Product
    H300s
    Vendor
    Netapp
    Product
    H300s Firmware
    Vendor
    Netapp
    Product
    H410c
    Vendor
    Netapp
    Product
    H410c Firmware
    Vendor
    Netapp
    Product
    H410s
    Vendor
    Netapp
    Product
    H410s Firmware
    Vendor
    Netapp
    Product
    H500s
    Vendor
    Netapp
    Product
    H500s Firmware
    Vendor
    Netapp
    Product
    H700s
    Vendor
    Netapp
    Product
    H700s Firmware

    Exploits

    https://github.com/Chinmay1743/af_packet.chttps://github.com/sendINUX/CVE-2021-22600__DirtyPagetable

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    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