Security update for the Linux Kernel

SUSE Security Update: Security update for the Linux Kernel
Announcement ID: SUSE-SU-2018:1376-1
Rating: important
References: #1046610 #1085279 #1087082 #1089895 #1091755 #1092497 #1094019
Affected Products:
  • SUSE Linux Enterprise Server 11-SP3-LTSS
  • SUSE Linux Enterprise Server 11-EXTRA
  • SUSE Linux Enterprise Point of Sale 11-SP3
  • SUSE Linux Enterprise Debuginfo 11-SP3
    		•

    An update that solves 5 vulnerabilities and has two fixes is now available.

    Description:



    The SUSE Linux Enterprise 11 SP3 LTSS kernel was updated to receive
    various security and bugfixes.

    The following security bugs were fixed:

    - CVE-2018-3639: Information leaks using "Memory Disambiguation" feature
    in modern CPUs were mitigated, aka "Spectre Variant 4" (bnc#1087082).

    A new boot commandline option was introduced,
    "spec_store_bypass_disable", which can have following values:

    - auto: Kernel detects whether your CPU model contains an implementation
    of Speculative Store Bypass and picks the most appropriate mitigation.
    - on: disable Speculative Store Bypass
    - off: enable Speculative Store Bypass
    - prctl: Control Speculative Store Bypass per thread via prctl.
    Speculative Store Bypass is enabled for a process by default. The
    state of the control is inherited on fork.
    - seccomp: Same as "prctl" above, but all seccomp threads will disable
    SSB unless they explicitly opt out.

    The default is "seccomp", meaning programs need explicit opt-in into the
    mitigation.

    Status can be queried via the
    /sys/devices/system/cpu/vulnerabilities/spec_store_bypass file, containing:

    - "Vulnerable"
    - "Mitigation: Speculative Store Bypass disabled"
    - "Mitigation: Speculative Store Bypass disabled via prctl"
    - "Mitigation: Speculative Store Bypass disabled via prctl and seccomp"

    - CVE-2018-1000199: An address corruption flaw was discovered while
    modifying a h/w breakpoint via 'modify_user_hw_breakpoint' routine, an
    unprivileged user/process could use this flaw to crash the system kernel
    resulting in DoS OR to potentially escalate privileges on a the system.
    (bsc#1089895)
    - CVE-2018-10675: The do_get_mempolicy function in mm/mempolicy.c allowed
    local users to cause a denial of service (use-after-free) or possibly
    have unspecified other impact via crafted system calls (bnc#1091755).
    - CVE-2017-5715: The retpoline mitigation for Spectre v2 has been enabled
    also for 32bit x86.
    - CVE-2017-5753: Spectre v1 mitigations have been improved by the versions
    merged from the upstream kernel.

    The following non-security bugs were fixed:

    - Update config files. Set CONFIG_RETPOLINE=y for i386.
    - x86/espfix: Fix return stack in do_double_fault() (bsc#1085279).
    - xen-netfront: fix req_prod check to avoid RX hang when index wraps
    (bsc#1046610).

    Patch Instructions:

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
    Alternatively you can run the command listed for your product:

    • SUSE Linux Enterprise Server 11-SP3-LTSS:
      zypper in -t patch slessp3-kernel-20180512-13616=1
    • SUSE Linux Enterprise Server 11-EXTRA:
      zypper in -t patch slexsp3-kernel-20180512-13616=1
    • SUSE Linux Enterprise Point of Sale 11-SP3:
      zypper in -t patch sleposp3-kernel-20180512-13616=1
    • SUSE Linux Enterprise Debuginfo 11-SP3:
      zypper in -t patch dbgsp3-kernel-20180512-13616=1

    Package List:

    • SUSE Linux Enterprise Server 11-SP3-LTSS (i586 s390x x86_64):
      • kernel-default-3.0.101-0.47.106.29.1
      • kernel-default-base-3.0.101-0.47.106.29.1
      • kernel-default-devel-3.0.101-0.47.106.29.1
      • kernel-source-3.0.101-0.47.106.29.1
      • kernel-syms-3.0.101-0.47.106.29.1
      • kernel-trace-3.0.101-0.47.106.29.1
      • kernel-trace-base-3.0.101-0.47.106.29.1
      • kernel-trace-devel-3.0.101-0.47.106.29.1
    • SUSE Linux Enterprise Server 11-SP3-LTSS (i586 x86_64):
      • kernel-ec2-3.0.101-0.47.106.29.1
      • kernel-ec2-base-3.0.101-0.47.106.29.1
      • kernel-ec2-devel-3.0.101-0.47.106.29.1
      • kernel-xen-3.0.101-0.47.106.29.1
      • kernel-xen-base-3.0.101-0.47.106.29.1
      • kernel-xen-devel-3.0.101-0.47.106.29.1
    • SUSE Linux Enterprise Server 11-SP3-LTSS (x86_64):
      • kernel-bigsmp-3.0.101-0.47.106.29.1
      • kernel-bigsmp-base-3.0.101-0.47.106.29.1
      • kernel-bigsmp-devel-3.0.101-0.47.106.29.1
    • SUSE Linux Enterprise Server 11-SP3-LTSS (s390x):
      • kernel-default-man-3.0.101-0.47.106.29.1
    • SUSE Linux Enterprise Server 11-SP3-LTSS (i586):
      • kernel-pae-3.0.101-0.47.106.29.1
      • kernel-pae-base-3.0.101-0.47.106.29.1
      • kernel-pae-devel-3.0.101-0.47.106.29.1
    • SUSE Linux Enterprise Server 11-EXTRA (i586 ia64 ppc64 s390x x86_64):
      • kernel-default-extra-3.0.101-0.47.106.29.1
    • SUSE Linux Enterprise Server 11-EXTRA (i586 x86_64):
      • kernel-xen-extra-3.0.101-0.47.106.29.1
    • SUSE Linux Enterprise Server 11-EXTRA (x86_64):
      • kernel-bigsmp-extra-3.0.101-0.47.106.29.1
      • kernel-trace-extra-3.0.101-0.47.106.29.1
    • SUSE Linux Enterprise Server 11-EXTRA (ppc64):
      • kernel-ppc64-extra-3.0.101-0.47.106.29.1
    • SUSE Linux Enterprise Server 11-EXTRA (i586):
      • kernel-pae-extra-3.0.101-0.47.106.29.1
    • SUSE Linux Enterprise Point of Sale 11-SP3 (i586):
      • kernel-default-3.0.101-0.47.106.29.1
      • kernel-default-base-3.0.101-0.47.106.29.1
      • kernel-default-devel-3.0.101-0.47.106.29.1
      • kernel-ec2-3.0.101-0.47.106.29.1
      • kernel-ec2-base-3.0.101-0.47.106.29.1
      • kernel-ec2-devel-3.0.101-0.47.106.29.1
      • kernel-pae-3.0.101-0.47.106.29.1
      • kernel-pae-base-3.0.101-0.47.106.29.1
      • kernel-pae-devel-3.0.101-0.47.106.29.1
      • kernel-source-3.0.101-0.47.106.29.1
      • kernel-syms-3.0.101-0.47.106.29.1
      • kernel-trace-3.0.101-0.47.106.29.1
      • kernel-trace-base-3.0.101-0.47.106.29.1
      • kernel-trace-devel-3.0.101-0.47.106.29.1
      • kernel-xen-3.0.101-0.47.106.29.1
      • kernel-xen-base-3.0.101-0.47.106.29.1
      • kernel-xen-devel-3.0.101-0.47.106.29.1
    • SUSE Linux Enterprise Debuginfo 11-SP3 (i586 s390x x86_64):
      • kernel-default-debuginfo-3.0.101-0.47.106.29.1
      • kernel-default-debugsource-3.0.101-0.47.106.29.1
      • kernel-trace-debuginfo-3.0.101-0.47.106.29.1
      • kernel-trace-debugsource-3.0.101-0.47.106.29.1
    • SUSE Linux Enterprise Debuginfo 11-SP3 (i586 x86_64):
      • kernel-ec2-debuginfo-3.0.101-0.47.106.29.1
      • kernel-ec2-debugsource-3.0.101-0.47.106.29.1
      • kernel-xen-debuginfo-3.0.101-0.47.106.29.1
      • kernel-xen-debugsource-3.0.101-0.47.106.29.1
    • SUSE Linux Enterprise Debuginfo 11-SP3 (x86_64):
      • kernel-bigsmp-debuginfo-3.0.101-0.47.106.29.1
      • kernel-bigsmp-debugsource-3.0.101-0.47.106.29.1
    • SUSE Linux Enterprise Debuginfo 11-SP3 (i586):
      • kernel-pae-debuginfo-3.0.101-0.47.106.29.1
      • kernel-pae-debugsource-3.0.101-0.47.106.29.1

    References: