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    CVE-2017-2647

    The KEYS subsystem in the Linux kernel before 3.18 allows local users to gain privileges or cause a denial of service (NULL pointer dereference and system crash) via vectors involving a NULL value for a certain match field, related to the keyring_search_iterator function in keyring.c.

    Published:Mar 21, 2017
    Last Modified:Apr 20, 2025
    EPS:Mar 31, 2017
    EPSS Score:0.00041
    CVSS Score:7.8

    Affected Products

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

    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

    http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81
    http://www.securityfocus.com/bid/97258
    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-2017:2444
    https://bugzilla.redhat.com/show_bug.cgi?id=1428353
    https://github.com/torvalds/linux/commit/c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81
    https://usn.ubuntu.com/3849-1/
    https://usn.ubuntu.com/3849-2/
    http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81
    http://www.securityfocus.com/bid/97258
    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-2017:2444
    https://bugzilla.redhat.com/show_bug.cgi?id=1428353
    https://github.com/torvalds/linux/commit/c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81
    https://usn.ubuntu.com/3849-1/
    https://usn.ubuntu.com/3849-2/

    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