CVE-2017-8797

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    CVE-2017-8797

    Published: 2 Jul 2017Last Modified: 15 Mar 2026

    Summary:

    Details: The NFSv4 server in the Linux kernel before 4.11.3 does not properly validate the layout type when processing the NFSv4 pNFS GETDEVICEINFO or LAYOUTGET operand in a UDP packet from a remote attacker. This type value is uninitialized upon encountering certain error conditions. This value is used as an array index for dereferencing, which leads to an OOPS and eventually a DoS of knfsd and a soft-lockup of the whole system.

    References: http://www.securityfocus.com/bid/99298, http://www.securitytracker.com/id/1038790, https://access.redhat.com/errata/RHSA-2017:1842, https://access.redhat.com/errata/RHSA-2017:2077, https://access.redhat.com/errata/RHSA-2017:2437, https://access.redhat.com/errata/RHSA-2017:2669, http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.11.3, https://bugzilla.redhat.com/show_bug.cgi?id=1466329, http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b550a32e60a4941994b437a8d662432a486235a5, http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f961e3f2acae94b727380c0b74e2d3954d0edf79, http://www.openwall.com/lists/oss-security/2017/06/27/5, https://github.com/torvalds/linux/commit/b550a32e60a4941994b437a8d662432a486235a5, https://github.com/torvalds/linux/commit/f961e3f2acae94b727380c0b74e2d3954d0edf79

    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
    CVE-2017-8797 | CVE-DB