Security update for the Linux Kernel

Announcement ID:	SUSE-SU-2021:0434-1
Rating:	important
References:	bsc#1144912 bsc#1149032 bsc#1158775 bsc#1163727 bsc#1171979 bsc#1176395 bsc#1176846 bsc#1176962 bsc#1177304 bsc#1177666 bsc#1178036 bsc#1178182 bsc#1178198 bsc#1178372 bsc#1178589 bsc#1178590 bsc#1178684 bsc#1178886 bsc#1179107 bsc#1179140 bsc#1179141 bsc#1179419 bsc#1179429 bsc#1179508 bsc#1179509 bsc#1179601 bsc#1179616 bsc#1179663 bsc#1179666 bsc#1179745 bsc#1179877 bsc#1179878 bsc#1179895 bsc#1179960 bsc#1179961 bsc#1180008 bsc#1180027 bsc#1180028 bsc#1180029 bsc#1180030 bsc#1180031 bsc#1180032 bsc#1180052 bsc#1180086 bsc#1180559 bsc#1180562 bsc#1180676 bsc#1181001 bsc#1181158 bsc#1181349 bsc#1181504 bsc#1181553 bsc#1181645
Cross-References:	CVE-2019-20934 CVE-2020-0444 CVE-2020-0465 CVE-2020-0466 CVE-2020-15436 CVE-2020-15437 CVE-2020-25211 CVE-2020-25639 CVE-2020-25669 CVE-2020-27068 CVE-2020-27777 CVE-2020-27786 CVE-2020-27825 CVE-2020-27835 CVE-2020-28374 CVE-2020-28915 CVE-2020-28974 CVE-2020-29371 CVE-2020-29568 CVE-2020-29569 CVE-2020-29660 CVE-2020-29661 CVE-2020-36158 CVE-2020-4788 CVE-2021-3347 CVE-2021-3348
CVSS scores:	CVE-2019-20934 ( SUSE ): 7.4 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVE-2019-20934 ( NVD ): 5.3 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:H CVE-2020-0444 ( SUSE ): 6.7 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H CVE-2020-0444 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2020-0465 ( SUSE ): 8.4 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVE-2020-0465 ( NVD ): 6.8 CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVE-2020-0466 ( SUSE ): 8.4 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVE-2020-0466 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2020-15436 ( SUSE ): 6.4 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H CVE-2020-15436 ( NVD ): 6.7 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H CVE-2020-15437 ( SUSE ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2020-15437 ( NVD ): 4.4 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H CVE-2020-25211 ( SUSE ): 5.9 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L CVE-2020-25211 ( NVD ): 6.0 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H CVE-2020-25639 ( SUSE ): 4.4 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H CVE-2020-25639 ( NVD ): 4.4 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H CVE-2020-25669 ( SUSE ): 4.3 CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2020-25669 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2020-27068 ( SUSE ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N CVE-2020-27068 ( NVD ): 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVE-2020-27777 ( SUSE ): 6.4 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H CVE-2020-27777 ( NVD ): 6.7 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H CVE-2020-27786 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2020-27786 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2020-27825 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H CVE-2020-27825 ( NVD ): 5.7 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:H CVE-2020-27835 ( SUSE ): 6.7 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H CVE-2020-27835 ( NVD ): 4.4 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H CVE-2020-28374 ( SUSE ): 8.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N CVE-2020-28374 ( NVD ): 8.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N CVE-2020-28915 ( SUSE ): 5.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L CVE-2020-28915 ( NVD ): 5.8 CVSS:3.1/AV:P/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:H CVE-2020-28974 ( SUSE ): 5.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L CVE-2020-28974 ( NVD ): 5.0 CVSS:3.1/AV:P/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:H CVE-2020-29371 ( SUSE ): 4.0 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N CVE-2020-29371 ( NVD ): 3.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N CVE-2020-29568 ( SUSE ): 6.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H CVE-2020-29568 ( NVD ): 6.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H CVE-2020-29569 ( SUSE ): 8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H CVE-2020-29569 ( NVD ): 8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H CVE-2020-29660 ( SUSE ): 7.4 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVE-2020-29660 ( NVD ): 4.4 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N CVE-2020-29661 ( SUSE ): 7.4 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVE-2020-29661 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2020-36158 ( SUSE ): 8.8 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVE-2020-36158 ( NVD ): 8.8 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVE-2020-4788 ( SUSE ): 5.1 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N CVE-2020-4788 ( NVD ): 4.7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N CVE-2021-3347 ( SUSE ): 8.4 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVE-2021-3347 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2021-3348 ( SUSE ): 5.1 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2021-3348 ( NVD ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
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 27 security fixes can now be installed.

Description:

The SUSE Linux Enterprise 12 SP4 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2021-3348: Fixed a use-after-free in nbd_add_socket() that could be triggered by local attackers (with access to the nbd device) via an I/O request (bnc#1181504).
• CVE-2021-3347: A use-after-free was discovered in the PI futexes during fault handling, allowing local users to execute code in the kernel (bnc#1181349).
• CVE-2020-27835: A use-after-free in the infiniband hfi1 driver was found, specifically in the way user calls Ioctl after open dev file and fork. A local user could use this flaw to crash the system (bnc#1179878).
• CVE-2020-25211: Fixed a buffer overflow in ctnetlink_parse_tuple_filter() which could be triggered by a local attackers by injecting conntrack netlink configuration (bnc#1176395).
• CVE-2020-25639: Fixed a NULL pointer dereference via nouveau ioctl (bnc#1176846).
• CVE-2020-29569: Fixed a potential privilege escalation and information leaks related to the PV block backend, as used by Xen (bnc#1179509).
• CVE-2020-29568: Fixed a denial of service issue, related to processing watch events (bnc#1179508).
• CVE-2020-0444: Fixed a bad kfree due to a logic error in audit_data_to_entry (bnc#1180027).
• CVE-2020-0465: Fixed multiple missing bounds checks in hid-multitouch.c that could have led to local privilege escalation (bnc#1180029).
• CVE-2020-0466: Fixed a use-after-free due to a logic error in do_epoll_ctl and ep_loop_check_proc of eventpoll.c (bnc#1180031).
• CVE-2020-4788: Fixed an issue with IBM Power9 processors could have allowed a local user to obtain sensitive information from the data in the L1 cache under extenuating circumstances (bsc#1177666).
• CVE-2020-15436: Fixed a use after free vulnerability in fs/block_dev.c which could have allowed local users to gain privileges or cause a denial of service (bsc#1179141).
• CVE-2020-27068: Fixed an out-of-bounds read due to a missing bounds check in the nl80211_policy policy of nl80211.c (bnc#1180086).
• CVE-2020-27777: Fixed a privilege escalation in the Run-Time Abstraction Services (RTAS) interface, affecting guests running on top of PowerVM or KVM hypervisors (bnc#1179107).
• CVE-2020-27786: Fixed an out-of-bounds write in the MIDI implementation (bnc#1179601).
• CVE-2020-27825: Fixed a race in the trace_open and buffer resize calls (bsc#1179960).
• CVE-2020-29371: Fixed uninitialized memory leaks to userspace (bsc#1179429).
• CVE-2020-29660: Fixed a locking inconsistency in the tty subsystem that may have allowed a read-after-free attack against TIOCGSID (bnc#1179745).
• CVE-2020-29661: Fixed a locking issue in the tty subsystem that allowed a use-after-free attack against TIOCSPGRP (bsc#1179745).
• CVE-2020-28974: Fixed a slab-out-of-bounds read in fbcon which could have been used by local attackers to read privileged information or potentially crash the kernel (bsc#1178589).
• CVE-2020-28915: Fixed a buffer over-read in the fbcon code which could have been used by local attackers to read kernel memory (bsc#1178886).
• CVE-2020-25669: Fixed a use-after-free read in sunkbd_reinit() (bsc#1178182).
• CVE-2020-15437: Fixed a null pointer dereference which could have allowed local users to cause a denial of service(bsc#1179140).
• CVE-2020-36158: Fixed a potential remote code execution in the Marvell mwifiex driver (bsc#1180559).
• CVE-2020-28374: Fixed a Linux SCSI target issue (bsc#1178372).
• CVE-2019-20934: Fixed a use-after-free in show_numa_stats() because NUMA fault statistics were inappropriately freed (bsc#1179663).

The following non-security bugs were fixed:

• blk-mq: improve heavily contended tag case (bsc#1178198).
• debugfs_lookup(): switch to lookup_one_len_unlocked() (bsc#1171979).
• epoll: Keep a reference on files added to the check list (bsc#1180031).
• fix regression in "epoll: Keep a reference on files added to the check list" (bsc#1180031, git-fixes).
• futex: Do not enable IRQs unconditionally in put_pi_state() (bsc#1149032).
• futex: Ensure the correct return value from futex_lock_pi() (bsc#1181349 bsc#1149032).
• futex: Fix incorrect should_fail_futex() handling (bsc#1181349).
• futex: Handle faults correctly for PI futexes (bsc#1181349 bsc#1149032).
• futex: Provide and use pi_state_update_owner() (bsc#1181349 bsc#1149032).
• futex: Replace pointless printk in fixup_owner() (bsc#1181349 bsc#1149032).
• futex: Simplify fixup_pi_state_owner() (bsc#1181349 bsc#1149032).
• futex: Use pi_state_update_owner() in put_pi_state() (bsc#1181349 bsc#1149032).
• HID: Fix slab-out-of-bounds read in hid_field_extract (bsc#1180052).
• iommu/vt-d: Do not dereference iommu_device if IOMMU_API is not built (bsc#1181001, jsc#ECO-3191).
• iommu/vt-d: Gracefully handle DMAR units with no supported address widths (bsc#1181001, jsc#ECO-3191).
• kABI: Fix kABI for extended APIC-ID support (bsc#1181001, jsc#ECO-3191).
• locking/futex: Allow low-level atomic operations to return -EAGAIN (bsc#1149032).
• md/bitmap: fix memory leak of temporary bitmap (bsc#1163727).
• md/bitmap: md_bitmap_get_counter returns wrong blocks (bsc#1163727).
• md/bitmap: md_bitmap_read_sb uses wrong bitmap blocks (bsc#1163727).
• md/cluster: block reshape with remote resync job (bsc#1163727).
• md/cluster: fix deadlock when node is doing resync job (bsc#1163727).
• md-cluster: Fix potential error pointer dereference in resize_bitmaps() (bsc#1163727).
• md-cluster: fix rmmod issue when md_cluster convert bitmap to none (bsc#1163727).
• md-cluster: fix safemode_delay value when converting to clustered bitmap (bsc#1163727).
• md-cluster: fix wild pointer of unlock_all_bitmaps() (bsc#1163727).
• Move upstreamed bt fixes into sorted section
• nbd: Fix memory leak in nbd_add_socket (bsc#1181504).
• net/x25: prevent a couple of overflows (bsc#1178590).
• NFS: mark nfsiod as CPU_INTENSIVE (bsc#1177304).
• rtmutex: Remove unused argument from rt_mutex_proxy_unlock() (bsc#1181349 bsc#1149032).
• s390/dasd: fix hanging device offline processing (bsc#1144912).
• scsi: ibmvfc: Avoid link down on FS9100 canister reboot (bsc#1176962 ltc#188304).
• scsi: ibmvfc: Use compiler attribute defines instead of attribute() (bsc#1176962 ltc#188304).
• SUNRPC: cache: ignore timestamp written to 'flush' file (bsc#1178036).
• x86/apic: Fix x2apic enablement without interrupt remapping (bsc#1181001, jsc#ECO-3191).
• x86/apic: Support 15 bits of APIC ID in IOAPIC/MSI where available (bsc#1181001, jsc#ECO-3191).
• x86/ioapic: Handle Extended Destination ID field in RTE (bsc#1181001, jsc#ECO-3191).
• x86/kvm: Add KVM_FEATURE_MSI_EXT_DEST_ID (bsc#1181001, jsc#ECO-3191).
• x86/kvm: Reserve KVM_FEATURE_MSI_EXT_DEST_ID (bsc#1181001, jsc#ECO-3191).
• x86/msi: Only use high bits of MSI address for DMAR unit (bsc#1181001, jsc#ECO-3191).
• x86/tracing: Introduce a static key for exception tracing (bsc#1179895).
• x86/traps: Simplify pagefault tracing logic (bsc#1179895).
• xfrm: Fix memleak on xfrm state destroy (bsc#1158775).

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-9-2021-434=1
• SUSE OpenStack Cloud Crowbar 9
  zypper in -t patch SUSE-OpenStack-Cloud-Crowbar-9-2021-434=1
• SUSE Linux Enterprise Server for SAP Applications 12 SP4
  zypper in -t patch SUSE-SLE-SAP-12-SP4-2021-434=1 SUSE-SLE-HA-12-SP4-2021-434=1
• SUSE Linux Enterprise High Availability Extension 12 SP4
  zypper in -t patch SUSE-SLE-HA-12-SP4-2021-434=1
• SUSE Linux Enterprise Live Patching 12-SP4
  zypper in -t patch SUSE-SLE-Live-Patching-12-SP4-2021-434=1
• SUSE Linux Enterprise Server 12 SP4 ESPOS 12-SP4
  zypper in -t patch SUSE-SLE-SERVER-12-SP4-ESPOS-2021-434=1
• SUSE Linux Enterprise Server 12 SP4 LTSS 12-SP4
  zypper in -t patch SUSE-SLE-SERVER-12-SP4-LTSS-2021-434=1

Package List:

• SUSE OpenStack Cloud 9 (nosrc x86_64)
  • kernel-default-4.12.14-95.68.1
• SUSE OpenStack Cloud 9 (x86_64)
  • kernel-default-devel-debuginfo-4.12.14-95.68.1
  • kernel-default-base-debuginfo-4.12.14-95.68.1
  • kernel-default-devel-4.12.14-95.68.1
  • kernel-default-debugsource-4.12.14-95.68.1