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    CVE-2016-9576

    The blk_rq_map_user_iov function in block/blk-map.c in the Linux kernel before 4.8.14 does not properly restrict the type of iterator, which allows local users to read or write to arbitrary kernel memory locations or cause a denial of service (use-after-free) by leveraging access to a /dev/sg device.

    Published:Nov 25, 2016
    Last Modified:Apr 12, 2025
    EPS:Dec 28, 2016
    EPSS Score:0.00067
    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 Extras Rt

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-416 Use After Free

    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=a0ac402cfcdc904f9772e1762b3fda112dcc56a0
    http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00040.html
    http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00041.html
    http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00057.html
    http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00062.html
    http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00072.html
    http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00075.html
    http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00081.html
    http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00088.html
    http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00091.html
    http://rhn.redhat.com/errata/RHSA-2017-0817.html
    http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.14
    http://www.openwall.com/lists/oss-security/2016/12/08/19
    http://www.securityfocus.com/bid/94821
    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://bugzilla.redhat.com/show_bug.cgi?id=1403145
    https://github.com/torvalds/linux/commit/a0ac402cfcdc904f9772e1762b3fda112dcc56a0
    http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a0ac402cfcdc904f9772e1762b3fda112dcc56a0
    http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00040.html
    http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00041.html
    http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00057.html
    http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00062.html
    http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00072.html
    http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00075.html
    http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00081.html
    http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00088.html
    http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00091.html
    http://rhn.redhat.com/errata/RHSA-2017-0817.html
    http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.14
    http://www.openwall.com/lists/oss-security/2016/12/08/19
    http://www.securityfocus.com/bid/94821
    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://bugzilla.redhat.com/show_bug.cgi?id=1403145
    https://github.com/torvalds/linux/commit/a0ac402cfcdc904f9772e1762b3fda112dcc56a0

    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