SUSE Security Update: Security update for the Linux Kernel
______________________________________________________________________________

Announcement ID:    SUSE-SU-2020:3532-1
Rating:             important
References:         #1051510 #1058115 #1065600 #1131277 #1160947 
                    #1161360 #1163524 #1166965 #1170232 #1170415 
                    #1171417 #1172073 #1172366 #1173115 #1173233 
                    #1175306 #1175721 #1175749 #1175882 #1176011 
                    #1176235 #1176278 #1176381 #1176423 #1176482 
                    #1176485 #1176698 #1176721 #1176722 #1176723 
                    #1176725 #1176732 #1176877 #1176907 #1176922 
                    #1176990 #1177027 #1177086 #1177121 #1177165 
                    #1177206 #1177226 #1177410 #1177411 #1177470 
                    #1177511 #1177513 #1177724 #1177725 #1177766 
                    #1178003 #1178123 #1178330 #1178393 #1178622 
                    #1178765 #1178782 #1178838 
Cross-References:   CVE-2020-0404 CVE-2020-0427 CVE-2020-0430
                    CVE-2020-0431 CVE-2020-0432 CVE-2020-12351
                    CVE-2020-12352 CVE-2020-14351 CVE-2020-14381
                    CVE-2020-14390 CVE-2020-16120 CVE-2020-2521
                    CVE-2020-25212 CVE-2020-25284 CVE-2020-25285
                    CVE-2020-25641 CVE-2020-25643 CVE-2020-25645
                    CVE-2020-25656 CVE-2020-25668 CVE-2020-25704
                    CVE-2020-25705 CVE-2020-26088 CVE-2020-27673
                    CVE-2020-27675 CVE-2020-8694
Affected Products:
                    SUSE Linux Enterprise Module for Live Patching 15
______________________________________________________________________________

   An update that solves 26 vulnerabilities and has 32 fixes
   is now available.

Description:


   The SUSE Linux Enterprise 15 LTSS 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-2020-25704: Fixed a memory leak in perf_event_parse_addr_filter()
     (bsc#1178393).
   - CVE-2020-25668: Fixed a use-after-free in con_font_op() (bnc#1178123).
   - CVE-2020-25656: Fixed a concurrency use-after-free in vt_do_kdgkb_ioctl
     (bnc#1177766).
   - CVE-2020-25285: Fixed a race condition between hugetlb sysctl handlers     in mm/hugetlb.c (bnc#1176485).
   - CVE-2020-0430: Fixed an OOB read in skb_headlen of
     /include/linux/skbuff.h (bnc#1176723).
   - CVE-2020-14351: Fixed a race in the perf_mmap_close() function
     (bsc#1177086).
   - CVE-2020-16120: Fixed permission check to open real file when using
     overlayfs. It was possible to have a file not readable by an
     unprivileged user be copied to a mountpoint controlled by that user and
     then be able to access the file (bsc#1177470).
   - CVE-2020-8694: Restricted energy meter to root access (bsc#1170415).
   - CVE-2020-12351: Fixed a type confusion while processing AMP packets aka
     "BleedingTooth" aka "BadKarma" (bsc#1177724).
   - CVE-2020-12352: Fixed an information leak when processing certain AMP
     packets aka "BleedingTooth" (bsc#1177725).
   - CVE-2020-25212: Fixed getxattr kernel panic and memory overflow
     (bsc#1176381).
   - CVE-2020-25645: Fixed an an issue in IPsec that caused traffic between
     two Geneve endpoints to be unencrypted (bnc#1177511).
   - CVE-2020-2521: Fixed getxattr kernel panic and memory overflow
     (bsc#1176381).
   - 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-2020-25643: 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-2020-25641: Fixed a zero-length biovec request issued by the block
     subsystem could have caused the kernel to enter an infinite loop,
     causing a denial of service (bsc#1177121).
   - 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-2020-14390: Fixed an out-of-bounds memory write leading to memory
     corruption or a denial of service when changing screen size
     (bnc#1176235).
   - CVE-2020-0432: Fixed an out of bounds write due to an integer overflow
     (bsc#1176721).
   - CVE-2020-0427: Fixed an out of bounds read due to a use after free
     (bsc#1176725).
   - CVE-2020-0431: Fixed an out of bounds write due to a missing bounds
     check (bsc#1176722).
   - 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).
   - CVE-2020-27673: Fixed an issue where rogue guests could have caused
     denial of service of Dom0 via high frequency events (XSA-332 bsc#1177411)
   - CVE-2020-27675: Fixed a race condition in event handler which may crash
     dom0 (XSA-331 bsc#1177410).

   The following non-security bugs were fixed:

   - btrfs: cleanup root usage by btrfs_get_alloc_profile  (bsc#1131277).
   - btrfs: reloc: clear DEAD_RELOC_TREE bit for orphan roots to prevent
     runaway balance (bsc#1171417 bsc#1160947 bsc#1172366 bsc#1176922).
   - btrfs: reloc: fix reloc root leak and NULL pointer dereference
     (bsc#1171417 bsc#1160947 bsc#1172366 bsc#1176922).
   - btrfs: remove root usage from can_overcommit (bsc#1131277).
   - hyperv_fb: disable superfluous VERSION_WIN10_V5 case (bsc#1175306).
   - hyperv_fb: Update screen_info after removing old framebuffer
     (bsc#1175306).
   - livepatch: Add -fdump-ipa-clones to build (). Add support for
     -fdump-ipa-clones GCC option. Update config files accordingly.
   - livepatch: Test if -fdump-ipa-clones is really available As of now we
     add -fdump-ipa-clones unconditionally. It does not cause a trouble if
     the kernel is build with the supported toolchain. Otherwise it could
     fail easily. Do the correct thing and test for the availability.
   - powerpc/pseries/cpuidle: add polling idle for shared processor guests
     (bsc#1178765 ltc#188968).
   - scsi: qla2xxx: Do not consume srb greedily (bsc#1173233).
   - scsi: qla2xxx: Handle incorrect entry_type entries (bsc#1173233).
   - video: hyperv: hyperv_fb: Obtain screen resolution from Hyper-V host
     (bsc#1175306).
   - video: hyperv: hyperv_fb: Support deferred IO for Hyper-V frame buffer
     driver (bsc#1175306).
   - video: hyperv: hyperv_fb: Use physical memory for fb on HyperV Gen 1 VMs
     (bsc#1175306).
   - x86/hyperv: Create and use Hyper-V page definitions (bsc#1176877).
   - x86/kexec: Use up-to-dated screen_info copy to fill boot params
     (bsc#1175306).
   - x86/unwind/orc: Fix inactive tasks with stack pointer in %sp on GCC 10
     compiled kernels (bsc#1058115 bsc#1176907).
   - 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).


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 Module for Live Patching 15:

      zypper in -t patch SUSE-SLE-Module-Live-Patching-15-2020-3532=1



Package List:

   - SUSE Linux Enterprise Module for Live Patching 15 (ppc64le x86_64):

      kernel-default-debuginfo-4.12.14-150.63.1
      kernel-default-debugsource-4.12.14-150.63.1
      kernel-default-livepatch-4.12.14-150.63.1
      kernel-livepatch-4_12_14-150_63-default-1-1.5.1
      kernel-livepatch-4_12_14-150_63-default-debuginfo-1-1.5.1


References:

   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-2020-0430.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-2020-12351.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-2020-16120.html
   https://www.suse.com/security/cve/CVE-2020-2521.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-2020-25285.html
   https://www.suse.com/security/cve/CVE-2020-25641.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-2020-25668.html
   https://www.suse.com/security/cve/CVE-2020-25704.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-2020-27673.html
   https://www.suse.com/security/cve/CVE-2020-27675.html
   https://www.suse.com/security/cve/CVE-2020-8694.html
   https://bugzilla.suse.com/1051510
   https://bugzilla.suse.com/1058115
   https://bugzilla.suse.com/1065600
   https://bugzilla.suse.com/1131277
   https://bugzilla.suse.com/1160947
   https://bugzilla.suse.com/1161360
   https://bugzilla.suse.com/1163524
   https://bugzilla.suse.com/1166965
   https://bugzilla.suse.com/1170232
   https://bugzilla.suse.com/1170415
   https://bugzilla.suse.com/1171417
   https://bugzilla.suse.com/1172073
   https://bugzilla.suse.com/1172366
   https://bugzilla.suse.com/1173115
   https://bugzilla.suse.com/1173233
   https://bugzilla.suse.com/1175306
   https://bugzilla.suse.com/1175721
   https://bugzilla.suse.com/1175749
   https://bugzilla.suse.com/1175882
   https://bugzilla.suse.com/1176011
   https://bugzilla.suse.com/1176235
   https://bugzilla.suse.com/1176278
   https://bugzilla.suse.com/1176381
   https://bugzilla.suse.com/1176423
   https://bugzilla.suse.com/1176482
   https://bugzilla.suse.com/1176485
   https://bugzilla.suse.com/1176698
   https://bugzilla.suse.com/1176721
   https://bugzilla.suse.com/1176722
   https://bugzilla.suse.com/1176723
   https://bugzilla.suse.com/1176725
   https://bugzilla.suse.com/1176732
   https://bugzilla.suse.com/1176877
   https://bugzilla.suse.com/1176907
   https://bugzilla.suse.com/1176922
   https://bugzilla.suse.com/1176990
   https://bugzilla.suse.com/1177027
   https://bugzilla.suse.com/1177086
   https://bugzilla.suse.com/1177121
   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/1177470
   https://bugzilla.suse.com/1177511
   https://bugzilla.suse.com/1177513
   https://bugzilla.suse.com/1177724
   https://bugzilla.suse.com/1177725
   https://bugzilla.suse.com/1177766
   https://bugzilla.suse.com/1178003
   https://bugzilla.suse.com/1178123
   https://bugzilla.suse.com/1178330
   https://bugzilla.suse.com/1178393
   https://bugzilla.suse.com/1178622
   https://bugzilla.suse.com/1178765
   https://bugzilla.suse.com/1178782
   https://bugzilla.suse.com/1178838