CVE-2017-2671

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    CVE-2017-2671

    Published: 5 Apr 2017Last Modified: 16 Apr 2026

    Summary:

    Details: 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.

    References: 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-2017:2669, https://github.com/danieljiang0415/android_kernel_crash_poc, https://twitter.com/danieljiang0415/status/845116665184497664, https://access.redhat.com/errata/RHSA-2017:1842, https://access.redhat.com/errata/RHSA-2017:2077, 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/torvalds/linux/commit/43a6684519ab0a6c52024b5e25322476cabad893

    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