SUSE Security Update: Security update for the Linux Kernel
______________________________________________________________________________

Announcement ID:    SUSE-SU-2020:2134-1
Rating:             important
References:         #1162002 #1170383 #1171189 #1171191 #1171220 
                    #1171732 #1171988 #1172049 #1172453 #1172458 
                    #1172775 #1172781 #1172782 #1172783 #1172999 
                    #1174115 #1174462 #1174543 
Cross-References:   CVE-2019-20810 CVE-2019-20812 CVE-2020-0305
                    CVE-2020-10135 CVE-2020-10711 CVE-2020-10732
                    CVE-2020-10751 CVE-2020-10766 CVE-2020-10767
                    CVE-2020-10768 CVE-2020-10773 CVE-2020-12771
                    CVE-2020-13974 CVE-2020-14416
Affected Products:
                    SUSE OpenStack Cloud 7
                    SUSE Linux Enterprise Server for SAP 12-SP2
                    SUSE Linux Enterprise Server 12-SP2-LTSS
                    SUSE Linux Enterprise Server 12-SP2-BCL
                    SUSE Linux Enterprise High Availability 12-SP2
______________________________________________________________________________

   An update that solves 14 vulnerabilities and has four fixes
   is now available.

Description:

   The SUSE Linux Enterprise 12 SP2 kernel was updated to receive various
   security and bugfixes.


   The following security bugs were fixed:


   - CVE-2020-10135: Legacy pairing and secure-connections pairing
     authentication in Bluetooth may have allowed an unauthenticated user to
     complete authentication without pairing credentials via adjacent access.
     An unauthenticated, adjacent attacker could impersonate a Bluetooth
     BR/EDR master or slave to pair with a previously paired remote device to
     successfully complete the authentication procedure without knowing the
     link key (bnc#1171988).
   - CVE-2020-10711: A NULL pointer dereference flaw was found in the SELinux
     subsystem. This flaw occurs while importing the Commercial IP Security
     Option (CIPSO) protocol's category bitmap into the SELinux extensible
     bitmap via the' ebitmap_netlbl_import' routine. This flaw allowed
 a
     remote network user to crash the system kernel, resulting in a denial of
     service (bnc#1171191).
   - CVE-2020-10751: A flaw was found in the SELinux LSM hook implementation,
     where it incorrectly assumed that an skb would only contain a single
     netlink message. The hook would incorrectly only validate the first
     netlink message in the skb and allow or deny the rest of the messages
     within the skb with the granted permission without further processing
     (bnc#1171189).
   - CVE-2019-20812: An issue was discovered in the prb_calc_retire_blk_tmo()
     function in net/packet/af_packet.c can result in a denial of service
     (CPU consumption and soft lockup) in a certain failure case involving
     TPACKET_V3, aka CID-b43d1f9f7067 (bnc#1172453).
   - CVE-2020-10732: A flaw was found in the implementation of userspace core
     dumps. This flaw allowed an attacker with a local account to crash a
     trivial program and exfiltrate private kernel data (bnc#1171220).
   - CVE-2020-0305: In cdev_get of char_dev.c, there is a possible
     use-after-free due to a race condition. This could lead to local
     escalation of privilege with System execution privileges needed. User
     interaction is not needed for exploitation (bnc#1174462).
   - CVE-2020-12771: btree_gc_coalesce in drivers/md/bcache/btree.c had a
     deadlock if a coalescing operation fails (bnc#1171732).
   - CVE-2020-10773: A kernel stack information leak on s390/s390x was fixed
     (bnc#1172999).
   - CVE-2020-14416: A race condition in tty->disc_data handling in the slip
     and slcan line discipline could lead to a use-after-free, aka
     CID-0ace17d56824. This affects drivers/net/slip/slip.c and
     drivers/net/can/slcan.c (bnc#1162002).
   - CVE-2020-10768: Indirect branch speculation could have been enabled
     after it was force-disabled by the PR_SPEC_FORCE_DISABLE prctl command.
     (bnc#1172783).
   - CVE-2020-10766: Fixed Rogue cross-process SSBD shutdown, where a Linux
     scheduler logical bug allows an attacker to turn off the SSBD
     protection. (bnc#1172781).
   - CVE-2020-10767: Indirect Branch Prediction Barrier was force-disabled
     when STIBP is unavailable or enhanced IBRS is available. (bnc#1172782).
   - CVE-2020-13974: drivers/tty/vt/keyboard.c had an integer overflow if
     k_ascii is called several times in a row, aka CID-b86dab054059.
     (bnc#1172775).
   - CVE-2019-20810: go7007_snd_init in drivers/media/usb/go7007/snd-go7007.c
     in the Linux kernel did not call snd_card_free for a failure path, which
     causes a memory leak, aka CID-9453264ef586 (bnc#1172458).

   The following non-security bugs were fixed:

   - intel_idle: Graceful probe failure when MWAIT is disabled (bsc#1174115).
   - x86/dumpstack/64: Handle faults when printing the "Stack: " part
 of an
     OOPS (bsc#1170383).
   - xfs: Fix tail rounding in xfs_alloc_file_space() (bsc#1172049).


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 OpenStack Cloud 7:

      zypper in -t patch SUSE-OpenStack-Cloud-7-2020-2134=1

   - SUSE Linux Enterprise Server for SAP 12-SP2:

      zypper in -t patch SUSE-SLE-SAP-12-SP2-2020-2134=1

   - SUSE Linux Enterprise Server 12-SP2-LTSS:

      zypper in -t patch SUSE-SLE-SERVER-12-SP2-2020-2134=1

   - SUSE Linux Enterprise Server 12-SP2-BCL:

      zypper in -t patch SUSE-SLE-SERVER-12-SP2-BCL-2020-2134=1

   - SUSE Linux Enterprise High Availability 12-SP2:

      zypper in -t patch SUSE-SLE-HA-12-SP2-2020-2134=1



Package List:

   - SUSE OpenStack Cloud 7 (s390x x86_64):

      kernel-default-4.4.121-92.138.1
      kernel-default-base-4.4.121-92.138.1
      kernel-default-base-debuginfo-4.4.121-92.138.1
      kernel-default-debuginfo-4.4.121-92.138.1
      kernel-default-debugsource-4.4.121-92.138.1
      kernel-default-devel-4.4.121-92.138.1
      kernel-syms-4.4.121-92.138.1

   - SUSE OpenStack Cloud 7 (x86_64):

      kgraft-patch-4_4_121-92_138-default-1-3.3.1

   - SUSE OpenStack Cloud 7 (noarch):

      kernel-devel-4.4.121-92.138.1
      kernel-macros-4.4.121-92.138.1
      kernel-source-4.4.121-92.138.1

   - SUSE OpenStack Cloud 7 (s390x):

      kernel-default-man-4.4.121-92.138.1

   - SUSE Linux Enterprise Server for SAP 12-SP2 (ppc64le x86_64):

      kernel-default-4.4.121-92.138.1
      kernel-default-base-4.4.121-92.138.1
      kernel-default-base-debuginfo-4.4.121-92.138.1
      kernel-default-debuginfo-4.4.121-92.138.1
      kernel-default-debugsource-4.4.121-92.138.1
      kernel-default-devel-4.4.121-92.138.1
      kernel-syms-4.4.121-92.138.1

   - SUSE Linux Enterprise Server for SAP 12-SP2 (x86_64):

      kgraft-patch-4_4_121-92_138-default-1-3.3.1

   - SUSE Linux Enterprise Server for SAP 12-SP2 (noarch):

      kernel-devel-4.4.121-92.138.1
      kernel-macros-4.4.121-92.138.1
      kernel-source-4.4.121-92.138.1

   - SUSE Linux Enterprise Server 12-SP2-LTSS (ppc64le s390x x86_64):

      kernel-default-4.4.121-92.138.1
      kernel-default-base-4.4.121-92.138.1
      kernel-default-base-debuginfo-4.4.121-92.138.1
      kernel-default-debuginfo-4.4.121-92.138.1
      kernel-default-debugsource-4.4.121-92.138.1
      kernel-default-devel-4.4.121-92.138.1
      kernel-syms-4.4.121-92.138.1

   - SUSE Linux Enterprise Server 12-SP2-LTSS (noarch):

      kernel-devel-4.4.121-92.138.1
      kernel-macros-4.4.121-92.138.1
      kernel-source-4.4.121-92.138.1

   - SUSE Linux Enterprise Server 12-SP2-LTSS (x86_64):

      kgraft-patch-4_4_121-92_138-default-1-3.3.1

   - SUSE Linux Enterprise Server 12-SP2-LTSS (s390x):

      kernel-default-man-4.4.121-92.138.1

   - SUSE Linux Enterprise Server 12-SP2-BCL (noarch):

      kernel-devel-4.4.121-92.138.1
      kernel-macros-4.4.121-92.138.1
      kernel-source-4.4.121-92.138.1

   - SUSE Linux Enterprise Server 12-SP2-BCL (x86_64):

      kernel-default-4.4.121-92.138.1
      kernel-default-base-4.4.121-92.138.1
      kernel-default-base-debuginfo-4.4.121-92.138.1
      kernel-default-debuginfo-4.4.121-92.138.1
      kernel-default-debugsource-4.4.121-92.138.1
      kernel-default-devel-4.4.121-92.138.1
      kernel-syms-4.4.121-92.138.1

   - SUSE Linux Enterprise High Availability 12-SP2 (ppc64le s390x x86_64):

      cluster-md-kmp-default-4.4.121-92.138.1
      cluster-md-kmp-default-debuginfo-4.4.121-92.138.1
      cluster-network-kmp-default-4.4.121-92.138.1
      cluster-network-kmp-default-debuginfo-4.4.121-92.138.1
      dlm-kmp-default-4.4.121-92.138.1
      dlm-kmp-default-debuginfo-4.4.121-92.138.1
      gfs2-kmp-default-4.4.121-92.138.1
      gfs2-kmp-default-debuginfo-4.4.121-92.138.1
      kernel-default-debuginfo-4.4.121-92.138.1
      kernel-default-debugsource-4.4.121-92.138.1
      ocfs2-kmp-default-4.4.121-92.138.1
      ocfs2-kmp-default-debuginfo-4.4.121-92.138.1


References:

   https://www.suse.com/security/cve/CVE-2019-20810.html
   https://www.suse.com/security/cve/CVE-2019-20812.html
   https://www.suse.com/security/cve/CVE-2020-0305.html
   https://www.suse.com/security/cve/CVE-2020-10135.html
   https://www.suse.com/security/cve/CVE-2020-10711.html
   https://www.suse.com/security/cve/CVE-2020-10732.html
   https://www.suse.com/security/cve/CVE-2020-10751.html
   https://www.suse.com/security/cve/CVE-2020-10766.html
   https://www.suse.com/security/cve/CVE-2020-10767.html
   https://www.suse.com/security/cve/CVE-2020-10768.html
   https://www.suse.com/security/cve/CVE-2020-10773.html
   https://www.suse.com/security/cve/CVE-2020-12771.html
   https://www.suse.com/security/cve/CVE-2020-13974.html
   https://www.suse.com/security/cve/CVE-2020-14416.html
   https://bugzilla.suse.com/1162002
   https://bugzilla.suse.com/1170383
   https://bugzilla.suse.com/1171189
   https://bugzilla.suse.com/1171191
   https://bugzilla.suse.com/1171220
   https://bugzilla.suse.com/1171732
   https://bugzilla.suse.com/1171988
   https://bugzilla.suse.com/1172049
   https://bugzilla.suse.com/1172453
   https://bugzilla.suse.com/1172458
   https://bugzilla.suse.com/1172775
   https://bugzilla.suse.com/1172781
   https://bugzilla.suse.com/1172782
   https://bugzilla.suse.com/1172783
   https://bugzilla.suse.com/1172999
   https://bugzilla.suse.com/1174115
   https://bugzilla.suse.com/1174462
   https://bugzilla.suse.com/1174543

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