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    CVE-2017-2671

    The ping_unhash function in net/ipv4/ping.c in the Linux kernel through 4.10.8 is too late in obtaining a certain lock and consequently cannot ensure that disconnect function calls are safe, which allows local users to cause a denial of service (panic) by leveraging access to the protocol value of IPPROTO_ICMP in a socket system call.

    Published:Mar 24, 2017
    Last Modified:Apr 20, 2025
    EPS:Apr 5, 2017
    EPSS Score:0.00252
    CVSS Score:5.5

    Affected Products

    Vendor
    Linux
    Product
    Linux Kernel
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Enterprise Mrg
    Vendor
    Redhat
    Product
    Rhel Extras Rt

    Exploits

    https://www.exploit-db.com/exploits/42135https://github.com/homjxi0e/CVE-2017-2671

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    References

    http://openwall.com/lists/oss-security/2017/04/04/8
    http://www.securityfocus.com/bid/97407
    https://access.redhat.com/errata/RHSA-2017:1842
    https://access.redhat.com/errata/RHSA-2017:2077
    https://access.redhat.com/errata/RHSA-2017:2669
    https://access.redhat.com/errata/RHSA-2018:1854
    https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git/commit/net/ipv4/ping.c?id=43a6684519ab0a6c52024b5e25322476cabad893
    https://github.com/danieljiang0415/android_kernel_crash_poc
    https://github.com/torvalds/linux/commit/43a6684519ab0a6c52024b5e25322476cabad893
    https://twitter.com/danieljiang0415/status/845116665184497664
    https://usn.ubuntu.com/3754-1/
    https://www.exploit-db.com/exploits/42135/
    http://openwall.com/lists/oss-security/2017/04/04/8
    http://www.securityfocus.com/bid/97407
    https://access.redhat.com/errata/RHSA-2017:1842
    https://access.redhat.com/errata/RHSA-2017:2077
    https://access.redhat.com/errata/RHSA-2017:2669
    https://access.redhat.com/errata/RHSA-2018:1854
    https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git/commit/net/ipv4/ping.c?id=43a6684519ab0a6c52024b5e25322476cabad893
    https://github.com/danieljiang0415/android_kernel_crash_poc
    https://github.com/torvalds/linux/commit/43a6684519ab0a6c52024b5e25322476cabad893
    https://twitter.com/danieljiang0415/status/845116665184497664
    https://usn.ubuntu.com/3754-1/
    https://www.exploit-db.com/exploits/42135/

    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