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    CVE-2017-16939

    The XFRM dump policy implementation in net/xfrm/xfrm_user.c in the Linux kernel before 4.13.11 allows local users to gain privileges or cause a denial of service (use-after-free) via a crafted SO_RCVBUF setsockopt system call in conjunction with XFRM_MSG_GETPOLICY Netlink messages.

    Published:Nov 24, 2017
    Last Modified:Apr 20, 2025
    EPS:Nov 24, 2017
    EPSS Score:0.08986
    CVSS Score:7.8

    Affected Products

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

    Exploits

    https://blogs.securiteam.com/index.php/archives/3535https://blogs.securiteam.com/index.php/archives/3535https://www.exploit-db.com/exploits/44049

    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=1137b5e2529a8f5ca8ee709288ecba3e68044df2
    http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00007.html
    http://seclists.org/fulldisclosure/2017/Nov/40
    http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.11
    http://www.securityfocus.com/bid/101954
    https://access.redhat.com/errata/RHSA-2018:1318
    https://access.redhat.com/errata/RHSA-2018:1355
    https://access.redhat.com/errata/RHSA-2019:1170
    https://access.redhat.com/errata/RHSA-2019:1190
    https://blogs.securiteam.com/index.php/archives/3535
    https://bugzilla.suse.com/show_bug.cgi?id=1069702
    https://github.com/torvalds/linux/commit/1137b5e2529a8f5ca8ee709288ecba3e68044df2
    https://lists.debian.org/debian-lts-announce/2017/12/msg00004.html
    https://www.debian.org/security/2018/dsa-4082
    http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=1137b5e2529a8f5ca8ee709288ecba3e68044df2
    http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00007.html
    http://seclists.org/fulldisclosure/2017/Nov/40
    http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.11
    http://www.securityfocus.com/bid/101954
    https://access.redhat.com/errata/RHSA-2018:1318
    https://access.redhat.com/errata/RHSA-2018:1355
    https://access.redhat.com/errata/RHSA-2019:1170
    https://access.redhat.com/errata/RHSA-2019:1190
    https://blogs.securiteam.com/index.php/archives/3535
    https://bugzilla.suse.com/show_bug.cgi?id=1069702
    https://github.com/torvalds/linux/commit/1137b5e2529a8f5ca8ee709288ecba3e68044df2
    https://lists.debian.org/debian-lts-announce/2017/12/msg00004.html
    https://www.debian.org/security/2018/dsa-4082

    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