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    CVE-2021-47612

    In the Linux kernel, the following vulnerability has been resolved: nfc: fix segfault in nfc_genl_dump_devices_done When kmalloc in nfc_genl_dump_devices() fails then nfc_genl_dump_devices_done() segfaults as below KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] CPU: 0 PID: 25 Comm: kworker/0:1 Not tainted 5.16.0-rc4-01180-g2a987e65025e-dirty #5 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-6.fc35 04/01/2014 Workqueue: events netlink_sock_destruct_work RIP: 0010:klist_iter_exit+0x26/0x80 Call Trace: <TASK> class_dev_iter_exit+0x15/0x20 nfc_genl_dump_devices_done+0x3b/0x50 genl_lock_done+0x84/0xd0 netlink_sock_destruct+0x8f/0x270 __sk_destruct+0x64/0x3b0 sk_destruct+0xa8/0xd0 __sk_free+0x2e8/0x3d0 sk_free+0x51/0x90 netlink_sock_destruct_work+0x1c/0x20 process_one_work+0x411/0x710 worker_thread+0x6fd/0xa80

    Published:Jun 19, 2024
    Last Modified:Dec 18, 2025
    EPS:Jun 19, 2024
    EPSS Score:0.00015
    CVSS Score:5.5

    Affected Products

    Vendor
    Linux
    Product
    Linux Kernel

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-476 NULL Pointer Dereference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    References

    https://git.kernel.org/stable/c/214af18abbe39db05beb305b2d11e87d09a6529c
    https://git.kernel.org/stable/c/2a8845b9603c545fddd17862282dc4c4ce0971e3
    https://git.kernel.org/stable/c/6644989642844de830f9b072cd65c553cb55946c
    https://git.kernel.org/stable/c/c602863ad28ec86794cb4ab4edea5324f555f181
    https://git.kernel.org/stable/c/d731ecc6f2eaec68f4ad1542283bbc7d07bd0112
    https://git.kernel.org/stable/c/d89e4211b51752daf063d638af50abed2fd5f96d
    https://git.kernel.org/stable/c/ea55b3797878752aa076b118afb727dcf79cac34
    https://git.kernel.org/stable/c/fd79a0cbf0b2e34bcc45b13acf962e2032a82203
    https://git.kernel.org/stable/c/214af18abbe39db05beb305b2d11e87d09a6529c
    https://git.kernel.org/stable/c/2a8845b9603c545fddd17862282dc4c4ce0971e3
    https://git.kernel.org/stable/c/6644989642844de830f9b072cd65c553cb55946c
    https://git.kernel.org/stable/c/c602863ad28ec86794cb4ab4edea5324f555f181
    https://git.kernel.org/stable/c/d731ecc6f2eaec68f4ad1542283bbc7d07bd0112
    https://git.kernel.org/stable/c/d89e4211b51752daf063d638af50abed2fd5f96d
    https://git.kernel.org/stable/c/ea55b3797878752aa076b118afb727dcf79cac34
    https://git.kernel.org/stable/c/fd79a0cbf0b2e34bcc45b13acf962e2032a82203

    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