Security update for Linux Kernel Live Patch 2 for SLE 12 SP2

SUSE Security Update: Security update for Linux Kernel Live Patch 2 for SLE 12 SP2
Announcement ID: SUSE-SU-2017:2068-1
Rating: important
References: #1027575 #1038564 #1042364 #1042892 #1046191 #1046202 #1046206 #1050751
Affected Products:
  • SUSE Linux Enterprise Live Patching 12
    		•

    An update that solves 7 vulnerabilities and has one errata is now available.

    Description:

    This update for the Linux Kernel 4.4.21-84 fixes several issues.

    The following security bugs were fixed:

    - CVE-2017-7533: A bug in inotify code allowed local users to escalate
    privilege (bsc#1050751).
    - CVE-2017-8797: The NFSv4 server in the Linux kernel did 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
    (bsc#1046202)
    - CVE-2017-7645: The NFSv2/NFSv3 server in the nfsd subsystem in the Linux
    kernel allowed remote attackers to cause a denial of service (system
    crash) via a long RPC reply, related to net/sunrpc/svc.c,
    fs/nfsd/nfs3xdr.c, and fs/nfsd/nfsxdr.c (bsc#1046191).
    - CVE-2017-2636: Race condition in drivers/tty/n_hdlc.c in the Linux
    kernel allowed local users to gain privileges or cause a denial of
    service (double free) by setting the HDLC line discipline (bsc#1027575).
    - CVE-2017-9242: The __ip6_append_data function in net/ipv6/ip6_output.c
    in the Linux kernel is too late in checking whether an overwrite of an
    skb data structure may occur, which allowed local users to cause a
    denial of service (system crash) via crafted system calls (bsc#1042892).
    - CVE-2017-9077: The tcp_v6_syn_recv_sock function in net/ipv6/tcp_ipv6.c
    in the Linux kernel mishandled inheritance, which allowed local users to
    cause a denial of service or possibly have unspecified other impact via
    crafted system calls, a related issue to CVE-2017-8890 (bsc#1042364).
    - CVE-2017-8890: The inet_csk_clone_lock function in
    net/ipv4/inet_connection_sock.c in the Linux kernel allowed attackers to
    cause a denial of service (double free) or possibly have unspecified
    other impact by leveraging use of the accept system call (bsc#1038564).

    Patch Instructions:

    To install this SUSE Security Update use YaST online_update.
    Alternatively you can run the command listed for your product:

    • SUSE Linux Enterprise Live Patching 12:
      zypper in -t patch SUSE-SLE-Live-Patching-12-2017-1271=1

    To bring your system up-to-date, use "zypper patch".

    Package List:

    • SUSE Linux Enterprise Live Patching 12 (x86_64):
      • kgraft-patch-4_4_21-84-default-7-2.1

    References: