SUSE Security Update: Security update for the Linux Kernel
______________________________________________________________________________

Announcement ID:    SUSE-SU-2017:1613-1
Rating:             critical
References:         #1039348 #979021 
Cross-References:   CVE-2015-3288 CVE-2017-1000364
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 fixes two vulnerabilities is now available.

Description:


   The SUSE Linux Enterprise 11 SP3 kernel was updated to receive various
   security fixes.

   The following security bugs were fixed:

   - CVE-2017-1000364: The default stack guard page was too small and could
     be "jumped over" by userland programs using more than one page of stack
     in functions and so lead to memory corruption. This update extends the
     stack guard page to 1 MB (for 4k pages) and 16 MB (for 64k pages) to
     reduce this attack vector. This is not a kernel bugfix, but a hardening
     measure against this kind of userland attack.(bsc#1039348)

   - CVE-2015-3288: mm/memory.c in the Linux kernel mishandled anonymous
     pages, which allowed local users to gain privileges or cause a denial of
     service (page tainting) via a crafted application that triggers writing
     to page zero (bnc#979021).


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 Server 11-SP3-LTSS:

      zypper in -t patch slessp3-kernel-13156=1

   - SUSE Linux Enterprise Server 11-EXTRA:

      zypper in -t patch slexsp3-kernel-13156=1

   - SUSE Linux Enterprise Point of Sale 11-SP3:

      zypper in -t patch sleposp3-kernel-13156=1

   - SUSE Linux Enterprise Debuginfo 11-SP3:

      zypper in -t patch dbgsp3-kernel-13156=1

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


Package List:

   - SUSE Linux Enterprise Server 11-SP3-LTSS (i586 s390x x86_64):

      kernel-default-3.0.101-0.47.102.1
      kernel-default-base-3.0.101-0.47.102.1
      kernel-default-devel-3.0.101-0.47.102.1
      kernel-source-3.0.101-0.47.102.1
      kernel-syms-3.0.101-0.47.102.1
      kernel-trace-3.0.101-0.47.102.1
      kernel-trace-base-3.0.101-0.47.102.1
      kernel-trace-devel-3.0.101-0.47.102.1

   - SUSE Linux Enterprise Server 11-SP3-LTSS (i586 x86_64):

      kernel-ec2-3.0.101-0.47.102.1
      kernel-ec2-base-3.0.101-0.47.102.1
      kernel-ec2-devel-3.0.101-0.47.102.1
      kernel-xen-3.0.101-0.47.102.1
      kernel-xen-base-3.0.101-0.47.102.1
      kernel-xen-devel-3.0.101-0.47.102.1

   - SUSE Linux Enterprise Server 11-SP3-LTSS (x86_64):

      kernel-bigsmp-3.0.101-0.47.102.1
      kernel-bigsmp-base-3.0.101-0.47.102.1
      kernel-bigsmp-devel-3.0.101-0.47.102.1

   - SUSE Linux Enterprise Server 11-SP3-LTSS (s390x):

      kernel-default-man-3.0.101-0.47.102.1

   - SUSE Linux Enterprise Server 11-SP3-LTSS (i586):

      kernel-pae-3.0.101-0.47.102.1
      kernel-pae-base-3.0.101-0.47.102.1
      kernel-pae-devel-3.0.101-0.47.102.1

   - SUSE Linux Enterprise Server 11-EXTRA (i586 ia64 ppc64 s390x x86_64):

      kernel-default-extra-3.0.101-0.47.102.1

   - SUSE Linux Enterprise Server 11-EXTRA (i586 x86_64):

      kernel-xen-extra-3.0.101-0.47.102.1

   - SUSE Linux Enterprise Server 11-EXTRA (x86_64):

      kernel-bigsmp-extra-3.0.101-0.47.102.1
      kernel-trace-extra-3.0.101-0.47.102.1

   - SUSE Linux Enterprise Server 11-EXTRA (ppc64):

      kernel-ppc64-extra-3.0.101-0.47.102.1

   - SUSE Linux Enterprise Server 11-EXTRA (i586):

      kernel-pae-extra-3.0.101-0.47.102.1

   - SUSE Linux Enterprise Point of Sale 11-SP3 (i586):

      kernel-default-3.0.101-0.47.102.1
      kernel-default-base-3.0.101-0.47.102.1
      kernel-default-devel-3.0.101-0.47.102.1
      kernel-ec2-3.0.101-0.47.102.1
      kernel-ec2-base-3.0.101-0.47.102.1
      kernel-ec2-devel-3.0.101-0.47.102.1
      kernel-pae-3.0.101-0.47.102.1
      kernel-pae-base-3.0.101-0.47.102.1
      kernel-pae-devel-3.0.101-0.47.102.1
      kernel-source-3.0.101-0.47.102.1
      kernel-syms-3.0.101-0.47.102.1
      kernel-trace-3.0.101-0.47.102.1
      kernel-trace-base-3.0.101-0.47.102.1
      kernel-trace-devel-3.0.101-0.47.102.1
      kernel-xen-3.0.101-0.47.102.1
      kernel-xen-base-3.0.101-0.47.102.1
      kernel-xen-devel-3.0.101-0.47.102.1

   - SUSE Linux Enterprise Debuginfo 11-SP3 (i586 s390x x86_64):

      kernel-default-debuginfo-3.0.101-0.47.102.1
      kernel-default-debugsource-3.0.101-0.47.102.1
      kernel-trace-debuginfo-3.0.101-0.47.102.1
      kernel-trace-debugsource-3.0.101-0.47.102.1

   - SUSE Linux Enterprise Debuginfo 11-SP3 (i586 x86_64):

      kernel-ec2-debuginfo-3.0.101-0.47.102.1
      kernel-ec2-debugsource-3.0.101-0.47.102.1
      kernel-xen-debuginfo-3.0.101-0.47.102.1
      kernel-xen-debugsource-3.0.101-0.47.102.1

   - SUSE Linux Enterprise Debuginfo 11-SP3 (x86_64):

      kernel-bigsmp-debuginfo-3.0.101-0.47.102.1
      kernel-bigsmp-debugsource-3.0.101-0.47.102.1

   - SUSE Linux Enterprise Debuginfo 11-SP3 (i586):

      kernel-pae-debuginfo-3.0.101-0.47.102.1
      kernel-pae-debugsource-3.0.101-0.47.102.1


References:

   https://www.suse.com/security/cve/CVE-2015-3288.html
   https://www.suse.com/security/cve/CVE-2017-1000364.html
   https://bugzilla.suse.com/1039348
   https://bugzilla.suse.com/979021