SUSE-SU-2019:1870-1: important: Security update for the Linux Kernel

Wed Jul 17 10:11:23 MDT 2019

   SUSE Security Update: Security update for the Linux Kernel
______________________________________________________________________________

Announcement ID:    SUSE-SU-2019:1870-1
Rating:             important
References:         #1102340 #1112824 #1130159 #1133190 #1134395 
                    #1135603 #1136922 #1137194 #1138293 #1139751 

Cross-References:   CVE-2018-20836 CVE-2018-5390 CVE-2018-7191
                    CVE-2019-11487 CVE-2019-12456 CVE-2019-12614
                    CVE-2019-12818
Affected Products:
                    SUSE Linux Enterprise Server for SAP 12-SP1
                    SUSE Linux Enterprise Server 12-SP1-LTSS
                    SUSE Linux Enterprise Module for Public Cloud 12
______________________________________________________________________________

   An update that solves 7 vulnerabilities and has three fixes
   is now available.

Description:

   The SUSE Linux Enterprise 12 SP1 kernel was updated to receive various
   security and bugfixes.

   The following security bugs were fixed:

   - CVE-2018-5390 aka "SegmentSmack": A remote attacker even with relatively
     low bandwidth could have caused lots of CPU usage by triggering the
     worst case scenario during IP and/or TCP fragment reassembly
     (bsc#1102340)
   - CVE-2018-7191: In the tun subsystem in the Linux kernel,
     dev_get_valid_name was not called before register_netdevice. This
     allowed local users to cause a denial of service (NULL pointer
     dereference and panic) via an ioctl(TUNSETIFF) call with a dev name
     containing a / character. (bnc#1135603)
   - CVE-2018-20836: A race condition in smp_task_timedout() and
     smp_task_done() in drivers/scsi/libsas/sas_expander.c, could have lead
     to a use-after-free. (bnc#1134395)
   - CVE-2019-12614: An unchecked kstrdup might have allowed an attacker to
     cause denial of service (a NULL pointer dereference and system crash).
     (bnc#1137194)
   - CVE-2019-12818: The nfc_llcp_build_tlv function in
     net/nfc/llcp_commands.c may have returned NULL. If the caller did not
     check for this, it would trigger a NULL pointer dereference. This would
     cause denial of service. (bnc#1138293)
   - CVE-2019-12456: An issue in the MPT3COMMAND case in _ctl_ioctl_main()
     allowed local users to cause a denial of service or possibly have
     unspecified other impact by changing the value of ioc_number between two
     kernel reads of that value, aka a "double fetch" vulnerability.
     (bsc#1136922)
   - CVE-2019-11487: An attacker could have triggered use-after-free via page
     reference count overflow on slow filesystems with at least of 140 GiB of
     RAM available. (bnc#1133190)

   The following non-security bugs were fixed:

   - fuse: Don't access pipe->buffers without pipe_lock() (Prerequisity for
     CVE-2019-11487, bsc#1133190).
   - fuse: call pipe_buf_release() under pipe lock (Prerequisity for
     CVE-2019-11487, bsc#1133190).
   - mm: /proc/pid/maps: Check permissions when opening proc pid maps
     (bsc#1130159).
   - pipe: add pipe_buf_get() helper (Prerequisity for CVE-2019-11487,
     bsc#1133190).
   - tcp: refine memory limit test in tcp_fragment() after CVE-2019-11478 fix
     (bsc#1139751).
   - x86/bugs: do not default to IBRS even on SKL (bsc#1112824).

Special Instructions and Notes:

   Please reboot the system after installing this update.

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 for SAP 12-SP1:

      zypper in -t patch SUSE-SLE-SAP-12-SP1-2019-1870=1

   - SUSE Linux Enterprise Server 12-SP1-LTSS:

      zypper in -t patch SUSE-SLE-SERVER-12-SP1-2019-1870=1

   - SUSE Linux Enterprise Module for Public Cloud 12:

      zypper in -t patch SUSE-SLE-Module-Public-Cloud-12-2019-1870=1

Package List:

   - SUSE Linux Enterprise Server for SAP 12-SP1 (x86_64):

      kernel-default-3.12.74-60.64.118.1
      kernel-default-base-3.12.74-60.64.118.1
      kernel-default-base-debuginfo-3.12.74-60.64.118.1
      kernel-default-debuginfo-3.12.74-60.64.118.1
      kernel-default-debugsource-3.12.74-60.64.118.1
      kernel-default-devel-3.12.74-60.64.118.1
      kernel-syms-3.12.74-60.64.118.1
      kernel-xen-3.12.74-60.64.118.1
      kernel-xen-base-3.12.74-60.64.118.1
      kernel-xen-base-debuginfo-3.12.74-60.64.118.1
      kernel-xen-debuginfo-3.12.74-60.64.118.1
      kernel-xen-debugsource-3.12.74-60.64.118.1
      kernel-xen-devel-3.12.74-60.64.118.1
      kgraft-patch-3_12_74-60_64_118-default-1-2.3.1
      kgraft-patch-3_12_74-60_64_118-xen-1-2.3.1

   - SUSE Linux Enterprise Server for SAP 12-SP1 (noarch):

      kernel-devel-3.12.74-60.64.118.1
      kernel-macros-3.12.74-60.64.118.1
      kernel-source-3.12.74-60.64.118.1

   - SUSE Linux Enterprise Server 12-SP1-LTSS (ppc64le s390x x86_64):

      kernel-default-3.12.74-60.64.118.1
      kernel-default-base-3.12.74-60.64.118.1
      kernel-default-base-debuginfo-3.12.74-60.64.118.1
      kernel-default-debuginfo-3.12.74-60.64.118.1
      kernel-default-debugsource-3.12.74-60.64.118.1
      kernel-default-devel-3.12.74-60.64.118.1
      kernel-syms-3.12.74-60.64.118.1

   - SUSE Linux Enterprise Server 12-SP1-LTSS (x86_64):

      kernel-xen-3.12.74-60.64.118.1
      kernel-xen-base-3.12.74-60.64.118.1
      kernel-xen-base-debuginfo-3.12.74-60.64.118.1
      kernel-xen-debuginfo-3.12.74-60.64.118.1
      kernel-xen-debugsource-3.12.74-60.64.118.1
      kernel-xen-devel-3.12.74-60.64.118.1
      kgraft-patch-3_12_74-60_64_118-default-1-2.3.1
      kgraft-patch-3_12_74-60_64_118-xen-1-2.3.1

   - SUSE Linux Enterprise Server 12-SP1-LTSS (noarch):

      kernel-devel-3.12.74-60.64.118.1
      kernel-macros-3.12.74-60.64.118.1
      kernel-source-3.12.74-60.64.118.1

   - SUSE Linux Enterprise Server 12-SP1-LTSS (s390x):

      kernel-default-man-3.12.74-60.64.118.1

   - SUSE Linux Enterprise Module for Public Cloud 12 (x86_64):

      kernel-ec2-3.12.74-60.64.118.1
      kernel-ec2-debuginfo-3.12.74-60.64.118.1
      kernel-ec2-debugsource-3.12.74-60.64.118.1
      kernel-ec2-devel-3.12.74-60.64.118.1
      kernel-ec2-extra-3.12.74-60.64.118.1
      kernel-ec2-extra-debuginfo-3.12.74-60.64.118.1

References:

   https://www.suse.com/security/cve/CVE-2018-20836.html
   https://www.suse.com/security/cve/CVE-2018-5390.html
   https://www.suse.com/security/cve/CVE-2018-7191.html
   https://www.suse.com/security/cve/CVE-2019-11487.html
   https://www.suse.com/security/cve/CVE-2019-12456.html
   https://www.suse.com/security/cve/CVE-2019-12614.html
   https://www.suse.com/security/cve/CVE-2019-12818.html
   https://bugzilla.suse.com/1102340
   https://bugzilla.suse.com/1112824
   https://bugzilla.suse.com/1130159
   https://bugzilla.suse.com/1133190
   https://bugzilla.suse.com/1134395
   https://bugzilla.suse.com/1135603
   https://bugzilla.suse.com/1136922
   https://bugzilla.suse.com/1137194
   https://bugzilla.suse.com/1138293
   https://bugzilla.suse.com/1139751