SUSE Security Update: Security update for the Linux Kernel
______________________________________________________________________________

Announcement ID:    SUSE-SU-2020:3501-1
Rating:             important
References:         #1065600 #1083244 #1131277 #1170415 #1175721 
                    #1175749 #1176011 #1176235 #1176253 #1176278 
                    #1176381 #1176382 #1176423 #1176482 #1176721 
                    #1176722 #1176725 #1176896 #1176922 #1176990 
                    #1177027 #1177086 #1177165 #1177206 #1177226 
                    #1177410 #1177411 #1177511 #1177513 #1177725 
                    #1177766 #1178782 
Cross-References:   CVE-2017-18204 CVE-2020-0404 CVE-2020-0427
                    CVE-2020-0431 CVE-2020-0432 CVE-2020-12352
                    CVE-2020-14351 CVE-2020-14381 CVE-2020-14390
                    CVE-2020-25212 CVE-2020-25284 CVE-2020-25643
                    CVE-2020-25645 CVE-2020-25656 CVE-2020-25705
                    CVE-2020-26088 CVE-2020-8694
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 17 vulnerabilities and has 15 fixes
   is now available.

Description:


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


   The following security bugs were fixed:

   - CVE-2020-25705: A flaw in the way reply ICMP packets are limited in was
     found that allowed to quickly scan open UDP ports. This flaw allowed an
     off-path remote user to effectively bypassing source port UDP
     randomization. The highest threat from this vulnerability is to
     confidentiality and possibly integrity, because software and services
     that rely on UDP source port randomization (like DNS) are indirectly
     affected as well. Kernel versions may be vulnerable to this issue
     (bsc#1175721, bsc#1178782).
   - CVE-2020-25656: Fixed a concurrency use-after-free in vt_do_kdgkb_ioctl
     (bnc#1177766).
   - CVE-2017-18204: Fixed a denial of service in the ocfs2_setattr function
     of fs/ocfs2/file.c (bnc#1083244).
   - CVE-2020-14351: Fixed a race in the perf_mmap_close() function
     (bsc#1177086).
   - CVE-2020-8694: Restricted energy meter to root access (bsc#1170415).
   - CVE-2020-12352: Fixed an information leak when processing certain AMP
     packets aka "BleedingTooth" (bsc#1177725).
   - CVE-2020-25645: Fixed an an issue in IPsec that caused traffic between
     two Geneve endpoints to be unencrypted (bnc#1177511).
   - CVE-2020-14381: Fixed a use-after-free in the fast user mutex (futex)
     wait operation, which could have lead to memory corruption and possibly
     privilege escalation (bsc#1176011).
   - CVE-2020-25212: Fixed A TOCTOU mismatch in the NFS client code which
     could have been used by local attackers to corrupt memory (bsc#1176381).
   - CVE-2020-14390: Fixed an out-of-bounds memory write leading to memory
     corruption or a denial of service when changing screen size
     (bnc#1176235).
   - CVE-2020-25643: Fixed a memory corruption and a read overflow which
     could have caused by improper input validation in the ppp_cp_parse_cr
     function (bsc#1177206).
   - CVE-2020-26088: Fixed an improper CAP_NET_RAW check in NFC socket
     creation could have been used by local attackers to create raw sockets,
     bypassing security mechanisms (bsc#1176990).
   - CVE-2020-0432: Fixed an out of bounds write due to an integer overflow
     (bsc#1176721).
   - CVE-2020-0431: Fixed an out of bounds write due to a missing bounds
     check (bsc#1176722).
   - CVE-2020-0427: Fixed an out of bounds read due to a use after free
     (bsc#1176725).
   - CVE-2020-0404: Fixed a linked list corruption due to an unusual root
     cause (bsc#1176423).
   - CVE-2020-25284: Fixed an incomplete permission checking for access to
     rbd devices, which could have been leveraged by local attackers to map
     or unmap rbd block devices (bsc#1176482).

   The following non-security bugs were fixed:

   - btrfs: fix race with relocation recovery and fs_root setup (bsc#1131277).
   - btrfs: flush_space always takes fs_info->fs_root (bsc#1131277).
   - btrfs: btrfs_init_new_device should use fs_info->dev_root (bsc#1131277,
     bsc#1176922).
   - btrfs: btrfs_test_opt and friends should take a btrfs_fs_info
     (bsc#1131277, bsc#1176922).
   - btrfs: call functions that always use the same root with fs_info instead
     (bsc#1131277, bsc#1176922).
   - btrfs: call functions that overwrite their root parameter with fs_info
     (bsc#1131277, bsc#1176922).
   - btrfs: flush_space always takes fs_info->fs_root (bsc#1131277,
     bsc#1176922).
   - btrfs: pull node/sector/stripe sizes out of root and into fs_info
     (bsc#1131277, bsc#1176922).
   - btrfs: Remove fs_info argument of btrfs_write_and_wait_transaction
     (bsc#1131277, bsc#1176922).
   - btrfs: remove root parameter from transaction commit/end routines
     (bsc#1131277, bsc#1176922).
   - btrfs: remove root usage from can_overcommit (bsc#1131277, bsc#1176922).
   - btrfs: root->fs_info cleanup, access fs_info->delayed_root directly
     (bsc#1131277, bsc#1176922).
   - btrfs: root->fs_info cleanup, add fs_info convenience variables
     (bsc#1131277, bsc#1176922).
   - btrfs: root->fs_info cleanup, btrfs_calc_{trans,trunc}_metadata_size
     (bsc#1131277, bsc#1176922).
   - btrfs: root->fs_info cleanup, update_block_group{,flags} (bsc#1131277,
     bsc#1176922).
   - btrfs: root->fs_info cleanup, use fs_info->dev_root everywhere
     (bsc#1131277, bsc#1176922).
   - btrfs: split btrfs_wait_marked_extents into normal and tree log
     functions (bsc#1131277, bsc#1176922).
   - btrfs: struct btrfsic_state->root should be an fs_info (bsc#1131277,
     bsc#1176922).
   - btrfs: take an fs_info directly when the root is not used otherwise
     (bsc#1131277, bsc#1176922).
   - xen/blkback: use lateeoi irq binding (XSA-332 bsc#1177411).
   - xen: do not reschedule in preemption off sections (bsc#1175749).
   - xen/events: add a new "late EOI" evtchn framework (XSA-332 bsc#1177411).
   - xen/events: add a proper barrier to 2-level uevent unmasking (XSA-332
     bsc#1177411).
   - xen/events: avoid removing an event channel while handling it (XSA-331
     bsc#1177410).
   - xen/events: block rogue events for some time (XSA-332 bsc#1177411).
   - xen/events: defer eoi in case of excessive number of events (XSA-332
     bsc#1177411).
   - xen/events: do not use chip_data for legacy IRQs (XSA-332 bsc#1065600).
   - xen/events: fix race in evtchn_fifo_unmask() (XSA-332 bsc#1177411).
   - xen/events: switch user event channels to lateeoi model (XSA-332
     bsc#1177411).
   - xen/events: use a common cpu hotplug hook for event channels (XSA-332
     bsc#1177411).
   - xen/netback: use lateeoi irq binding (XSA-332 bsc#1177411).
   - xen/pciback: use lateeoi irq binding (XSA-332 bsc#1177411).
   - xen/scsiback: use lateeoi irq binding (XSA-332 bsc#1177411).
   - XEN uses irqdesc::irq_data_common::handler_data to store a per interrupt
     XEN data pointer which contains XEN specific information (XSA-332
     bsc#1065600).


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-7-2020-3501=1

   - SUSE Linux Enterprise Server for SAP 12-SP2:

      zypper in -t patch SUSE-SLE-SAP-12-SP2-2020-3501=1

   - SUSE Linux Enterprise Server 12-SP2-LTSS:

      zypper in -t patch SUSE-SLE-SERVER-12-SP2-2020-3501=1

   - SUSE Linux Enterprise Server 12-SP2-BCL:

      zypper in -t patch SUSE-SLE-SERVER-12-SP2-BCL-2020-3501=1

   - SUSE Linux Enterprise High Availability 12-SP2:

      zypper in -t patch SUSE-SLE-HA-12-SP2-2020-3501=1



Package List:

   - SUSE OpenStack Cloud 7 (s390x x86_64):

      kernel-default-4.4.121-92.146.1
      kernel-default-base-4.4.121-92.146.1
      kernel-default-base-debuginfo-4.4.121-92.146.1
      kernel-default-debuginfo-4.4.121-92.146.1
      kernel-default-debugsource-4.4.121-92.146.1
      kernel-default-devel-4.4.121-92.146.1
      kernel-syms-4.4.121-92.146.1

   - SUSE OpenStack Cloud 7 (noarch):

      kernel-devel-4.4.121-92.146.1
      kernel-macros-4.4.121-92.146.1
      kernel-source-4.4.121-92.146.1

   - SUSE OpenStack Cloud 7 (x86_64):

      kgraft-patch-4_4_121-92_146-default-1-3.5.1

   - SUSE OpenStack Cloud 7 (s390x):

      kernel-default-man-4.4.121-92.146.1

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

      kernel-default-4.4.121-92.146.1
      kernel-default-base-4.4.121-92.146.1
      kernel-default-base-debuginfo-4.4.121-92.146.1
      kernel-default-debuginfo-4.4.121-92.146.1
      kernel-default-debugsource-4.4.121-92.146.1
      kernel-default-devel-4.4.121-92.146.1
      kernel-syms-4.4.121-92.146.1
      kgraft-patch-4_4_121-92_146-default-1-3.5.1

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

      kernel-devel-4.4.121-92.146.1
      kernel-macros-4.4.121-92.146.1
      kernel-source-4.4.121-92.146.1

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

      kernel-default-4.4.121-92.146.1
      kernel-default-base-4.4.121-92.146.1
      kernel-default-base-debuginfo-4.4.121-92.146.1
      kernel-default-debuginfo-4.4.121-92.146.1
      kernel-default-debugsource-4.4.121-92.146.1
      kernel-default-devel-4.4.121-92.146.1
      kernel-syms-4.4.121-92.146.1

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

      kgraft-patch-4_4_121-92_146-default-1-3.5.1

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

      kernel-devel-4.4.121-92.146.1
      kernel-macros-4.4.121-92.146.1
      kernel-source-4.4.121-92.146.1

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

      kernel-default-man-4.4.121-92.146.1

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

      kernel-devel-4.4.121-92.146.1
      kernel-macros-4.4.121-92.146.1
      kernel-source-4.4.121-92.146.1

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

      kernel-default-4.4.121-92.146.1
      kernel-default-base-4.4.121-92.146.1
      kernel-default-base-debuginfo-4.4.121-92.146.1
      kernel-default-debuginfo-4.4.121-92.146.1
      kernel-default-debugsource-4.4.121-92.146.1
      kernel-default-devel-4.4.121-92.146.1
      kernel-syms-4.4.121-92.146.1

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

      cluster-md-kmp-default-4.4.121-92.146.1
      cluster-md-kmp-default-debuginfo-4.4.121-92.146.1
      cluster-network-kmp-default-4.4.121-92.146.1
      cluster-network-kmp-default-debuginfo-4.4.121-92.146.1
      dlm-kmp-default-4.4.121-92.146.1
      dlm-kmp-default-debuginfo-4.4.121-92.146.1
      gfs2-kmp-default-4.4.121-92.146.1
      gfs2-kmp-default-debuginfo-4.4.121-92.146.1
      kernel-default-debuginfo-4.4.121-92.146.1
      kernel-default-debugsource-4.4.121-92.146.1
      ocfs2-kmp-default-4.4.121-92.146.1
      ocfs2-kmp-default-debuginfo-4.4.121-92.146.1


References:

   https://www.suse.com/security/cve/CVE-2017-18204.html
   https://www.suse.com/security/cve/CVE-2020-0404.html
   https://www.suse.com/security/cve/CVE-2020-0427.html
   https://www.suse.com/security/cve/CVE-2020-0431.html
   https://www.suse.com/security/cve/CVE-2020-0432.html
   https://www.suse.com/security/cve/CVE-2020-12352.html
   https://www.suse.com/security/cve/CVE-2020-14351.html
   https://www.suse.com/security/cve/CVE-2020-14381.html
   https://www.suse.com/security/cve/CVE-2020-14390.html
   https://www.suse.com/security/cve/CVE-2020-25212.html
   https://www.suse.com/security/cve/CVE-2020-25284.html
   https://www.suse.com/security/cve/CVE-2020-25643.html
   https://www.suse.com/security/cve/CVE-2020-25645.html
   https://www.suse.com/security/cve/CVE-2020-25656.html
   https://www.suse.com/security/cve/CVE-2020-25705.html
   https://www.suse.com/security/cve/CVE-2020-26088.html
   https://www.suse.com/security/cve/CVE-2020-8694.html
   https://bugzilla.suse.com/1065600
   https://bugzilla.suse.com/1083244
   https://bugzilla.suse.com/1131277
   https://bugzilla.suse.com/1170415
   https://bugzilla.suse.com/1175721
   https://bugzilla.suse.com/1175749
   https://bugzilla.suse.com/1176011
   https://bugzilla.suse.com/1176235
   https://bugzilla.suse.com/1176253
   https://bugzilla.suse.com/1176278
   https://bugzilla.suse.com/1176381
   https://bugzilla.suse.com/1176382
   https://bugzilla.suse.com/1176423
   https://bugzilla.suse.com/1176482
   https://bugzilla.suse.com/1176721
   https://bugzilla.suse.com/1176722
   https://bugzilla.suse.com/1176725
   https://bugzilla.suse.com/1176896
   https://bugzilla.suse.com/1176922
   https://bugzilla.suse.com/1176990
   https://bugzilla.suse.com/1177027
   https://bugzilla.suse.com/1177086
   https://bugzilla.suse.com/1177165
   https://bugzilla.suse.com/1177206
   https://bugzilla.suse.com/1177226
   https://bugzilla.suse.com/1177410
   https://bugzilla.suse.com/1177411
   https://bugzilla.suse.com/1177511
   https://bugzilla.suse.com/1177513
   https://bugzilla.suse.com/1177725
   https://bugzilla.suse.com/1177766
   https://bugzilla.suse.com/1178782