Security update for the Linux Kernel

Announcement ID:	SUSE-SU-2020:3544-1
Rating:	important
References:	bsc#1051510 bsc#1058115 bsc#1065600 bsc#1131277 bsc#1160947 bsc#1163524 bsc#1166965 bsc#1168468 bsc#1170139 bsc#1170232 bsc#1170415 bsc#1171417 bsc#1171675 bsc#1172073 bsc#1172366 bsc#1173115 bsc#1173233 bsc#1175228 bsc#1175306 bsc#1175721 bsc#1175882 bsc#1176011 bsc#1176235 bsc#1176278 bsc#1176381 bsc#1176423 bsc#1176482 bsc#1176485 bsc#1176698 bsc#1176721 bsc#1176722 bsc#1176723 bsc#1176725 bsc#1176732 bsc#1176869 bsc#1176907 bsc#1176922 bsc#1176935 bsc#1176950 bsc#1176990 bsc#1177027 bsc#1177086 bsc#1177121 bsc#1177206 bsc#1177340 bsc#1177410 bsc#1177411 bsc#1177470 bsc#1177511 bsc#1177724 bsc#1177725 bsc#1177766 bsc#1177816 bsc#1178123 bsc#1178330 bsc#1178393 bsc#1178669 bsc#1178765 bsc#1178782 bsc#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
CVSS scores:	CVE-2020-0404 ( SUSE ): 6.2 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2020-0404 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2020-0427 ( SUSE ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N CVE-2020-0427 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N CVE-2020-0430 ( SUSE ): 8.4 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVE-2020-0430 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2020-0431 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2020-0431 ( NVD ): 6.7 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H CVE-2020-0432 ( SUSE ): 8.4 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVE-2020-0432 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2020-12351 ( SUSE ): 7.5 CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVE-2020-12351 ( NVD ): 8.8 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVE-2020-12352 ( SUSE ): 3.1 CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L CVE-2020-12352 ( NVD ): 6.5 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVE-2020-14351 ( SUSE ): 4.4 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H CVE-2020-14351 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2020-14381 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2020-14381 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2020-14390 ( SUSE ): 8.4 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVE-2020-14390 ( NVD ): 5.6 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:H CVE-2020-16120 ( SUSE ): 6.2 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVE-2020-16120 ( NVD ): 4.4 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N CVE-2020-25212 ( SUSE ): 7.4 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVE-2020-25212 ( NVD ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2020-25284 ( SUSE ): 6.7 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H CVE-2020-25284 ( NVD ): 4.1 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:N CVE-2020-25285 ( SUSE ): 6.7 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H CVE-2020-25285 ( NVD ): 6.4 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H CVE-2020-25641 ( SUSE ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2020-25641 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2020-25643 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2020-25643 ( NVD ): 7.2 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H CVE-2020-25645 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVE-2020-25645 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVE-2020-25656 ( SUSE ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2020-25656 ( NVD ): 4.1 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N CVE-2020-25668 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2020-25668 ( NVD ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2020-25704 ( SUSE ): 6.2 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2020-25704 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2020-25705 ( SUSE ): 7.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N CVE-2020-25705 ( NVD ): 7.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N CVE-2020-26088 ( SUSE ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2020-26088 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N CVE-2020-27673 ( SUSE ): 6.2 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2020-27673 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2020-27675 ( SUSE ): 6.2 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2020-27675 ( NVD ): 4.7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2020-8694 ( SUSE ): 5.1 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N CVE-2020-8694 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Affected Products:	SUSE Linux Enterprise High Availability Extension 12 SP4 SUSE Linux Enterprise High Performance Computing 12 SP4 SUSE Linux Enterprise Live Patching 12-SP4 SUSE Linux Enterprise Server 12 SP4 SUSE Linux Enterprise Server 12 SP4 ESPOS 12-SP4 SUSE Linux Enterprise Server 12 SP4 LTSS 12-SP4 SUSE Linux Enterprise Server for SAP Applications 12 SP4 SUSE OpenStack Cloud 9 SUSE OpenStack Cloud Crowbar 9

An update that solves 26 vulnerabilities and has 34 security fixes can now be installed.

Description:

The SUSE Linux Enterprise 12 SP4 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 a permissions issue in ovl_path_open() (bsc#1177470).
• CVE-2020-8694: Restricted energy meter to root access (bsc#1170415).
• CVE-2020-12351: Implemented a kABI workaround for bluetooth l2cap_ops filter addition (bsc#1177724).
• CVE-2020-12352: Fixed an information leak when processing certain AMP packets aka "BleedingTooth" (bsc#1177725).
• CVE-2020-25212: Fixed a TOCTOU mismatch in the NFS client code (bnc#1176381).
• 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 UAF in the fast user mutex (futex) wait operation (bsc#1176011).
• CVE-2020-25643: Fixed an improper input validation in the ppp_cp_parse_cr function of the HDLC_PPP module (bnc#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: remove root usage from can_overcommit (bsc#1131277).
• hv: vmbus: Add timeout to vmbus_wait_for_unload (bsc#1177816).
• 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.
• NFS: On fatal writeback errors, we need to call nfs_inode_remove_request() (bsc#1177340).
• NFS: only invalidate dentrys that are clearly invalid (bsc#1178669 bsc#1170139).
• NFS: Revalidate the file mapping on all fatal writeback errors (bsc#1177340).
• NFSv4: do not mark all open state for recovery when handling recallable state revoked flag (bsc#1176935).
• obsolete_kmp: provide newer version than the obsoleted one (boo#1170232).
• ocfs2: give applications more IO opportunities during fstrim (bsc#1175228).
• powerpc/pseries/cpuidle: add polling idle for shared processor guests (bsc#1178765 ltc#188968).
• rpadlpar_io: Add MODULE_DESCRIPTION entries to kernel modules (bsc#1176869 ltc#188243).
• scsi: fnic: Do not call 'scsi_done()' for unhandled commands (bsc#1168468, bsc#1171675).
• 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/kexec: Use up-to-dated screen_info copy to fill boot params (bsc#1175306).
• xen/blkback: use lateeoi irq binding (XSA-332 bsc#1177411).
• 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 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 9
  zypper in -t patch SUSE-OpenStack-Cloud-9-2020-3544=1
• SUSE OpenStack Cloud Crowbar 9
  zypper in -t patch SUSE-OpenStack-Cloud-Crowbar-9-2020-3544=1
• SUSE Linux Enterprise Server for SAP Applications 12 SP4
  zypper in -t patch SUSE-SLE-HA-12-SP4-2020-3544=1 SUSE-SLE-SAP-12-SP4-2020-3544=1
• SUSE Linux Enterprise High Availability Extension 12 SP4
  zypper in -t patch SUSE-SLE-HA-12-SP4-2020-3544=1
• SUSE Linux Enterprise Live Patching 12-SP4
  zypper in -t patch SUSE-SLE-Live-Patching-12-SP4-2020-3544=1
• SUSE Linux Enterprise Server 12 SP4 ESPOS 12-SP4
  zypper in -t patch SUSE-SLE-SERVER-12-SP4-ESPOS-2020-3544=1
• SUSE Linux Enterprise Server 12 SP4 LTSS 12-SP4
  zypper in -t patch SUSE-SLE-SERVER-12-SP4-LTSS-2020-3544=1

Package List:

• SUSE OpenStack Cloud 9 (nosrc x86_64)
  • kernel-default-4.12.14-95.65.1
• SUSE OpenStack Cloud 9 (x86_64)
  • kernel-default-devel-4.12.14-95.65.1
  • kernel-default-base-4.12.14-95.65.1
  • kernel-default-devel-debuginfo-4.12.14-95.65.1
  • kernel-default-base-debuginfo-4.12.14-95.65.1
  • kernel-default-debuginfo-4.12.14-95.65.1
  • kernel-default-debugsource-4.12.14-95.65.1
  • kernel-syms-4.12.14-95.65.1
• SUSE OpenStack Cloud 9 (noarch)
  • kernel-macros-4.12.14-95.65.1
  • kernel-source-4.12.1