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    CVE-2016-1886

    Integer signedness error in the genkbd_commonioctl function in sys/dev/kbd/kbd.c in FreeBSD 9.3 before p42, 10.1 before p34, 10.2 before p17, and 10.3 before p3 allows local users to obtain sensitive information from kernel memory, cause a denial of service (memory overwrite and kernel crash), or gain privileges via a negative value in the flen structure member in the arg argument in a SETFKEY ioctl call, which triggers a "two way heap and stack overflow."

    Published:May 25, 2016
    Last Modified:Apr 12, 2025
    EPS:May 25, 2016
    EPSS Score:0.00219
    CVSS Score:7.8

    Affected Products

    Vendor
    Freebsd
    Product
    Freebsd

    Exploits

    http://cturt.github.io/SETFKEY.htmlhttp://cturt.github.io/SETFKEY.htmlhttps://www.exploit-db.com/exploits/44211

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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