SUSE Security Update: Security update for the Linux Kernel
______________________________________________________________________________

Announcement ID:    SUSE-SU-2022:2377-1
Rating:             important
References:         #1065729 #1129770 #1177282 #1194013 #1196964 
                    #1197170 #1199482 #1199487 #1199657 #1200343 
                    #1200571 #1200599 #1200600 #1200604 #1200605 
                    #1200608 #1200619 #1200692 #1200762 #1200806 
                    #1200807 #1200809 #1200810 #1200813 #1200820 
                    #1200821 #1200822 #1200829 #1200868 #1200869 
                    #1200870 #1200871 #1200872 #1200873 #1200925 
                    #1201080 #1201251 
Cross-References:   CVE-2020-26541 CVE-2021-4157 CVE-2022-1012
                    CVE-2022-1679 CVE-2022-20132 CVE-2022-20141
                    CVE-2022-20154 CVE-2022-2318 CVE-2022-26365
                    CVE-2022-29900 CVE-2022-29901 CVE-2022-33740
                    CVE-2022-33741 CVE-2022-33742 CVE-2022-33981
                   
CVSS scores:
                    CVE-2020-26541 (NVD) : 6.5 CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
                    CVE-2020-26541 (SUSE): 6 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
                    CVE-2021-4157 (NVD) : 8 CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
                    CVE-2021-4157 (SUSE): 3.4 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:L
                    CVE-2022-1012 (SUSE): 6.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:H
                    CVE-2022-1679 (NVD) : 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
                    CVE-2022-1679 (SUSE): 7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
                    CVE-2022-20132 (NVD) : 4.6 CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
                    CVE-2022-20132 (SUSE): 4.9 CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L
                    CVE-2022-20141 (NVD) : 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
                    CVE-2022-20141 (SUSE): 7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
                    CVE-2022-20154 (NVD) : 6.4 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
                    CVE-2022-20154 (SUSE): 7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
                    CVE-2022-2318 (SUSE): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
                    CVE-2022-26365 (SUSE): 6.6 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H
                    CVE-2022-29900 (SUSE): 5.1 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
                    CVE-2022-33740 (SUSE): 6.6 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H
                    CVE-2022-33741 (SUSE): 6.6 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H
                    CVE-2022-33742 (SUSE): 6.6 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H
                    CVE-2022-33981 (NVD) : 3.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
                    CVE-2022-33981 (SUSE): 5.1 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Products:
                    SUSE Linux Enterprise Server 12-SP5
______________________________________________________________________________

   An update that solves 15 vulnerabilities and has 22 fixes
   is now available.

Description:

   The SUSE Linux Enterprise 12 SP5 kernel was updated to receive various
   security and bugfixes.


   The following security bugs were fixed:

   - CVE-2022-29900, CVE-2022-29901: Fixed the RETBLEED attack, a new Spectre
     like Branch Target Buffer attack, that can leak arbitrary kernel
     information (bsc#1199657).
   - CVE-2022-1679: Fixed a use-after-free in the Atheros wireless driver in
     the way a user forces the ath9k_htc_wait_for_target function to fail
     with some input messages (bsc#1199487).
   - CVE-2022-20132: Fixed out of bounds read due to improper input
     validation in lg_probe and related functions of hid-lg.c (bsc#1200619).
   - CVE-2022-1012: Fixed information leak caused by small table perturb size
     in the TCP source port generation algorithm (bsc#1199482).
   - CVE-2022-33981: Fixed use-after-free in floppy driver (bsc#1200692)
   - CVE-2022-20141: Fixed a possible use after free due to improper locking
     in ip_check_mc_rcu() (bsc#1200604).
   - CVE-2021-4157: Fixed an out of memory bounds write flaw in the NFS
     subsystem, related to the replication of files with NFS. A user could
     potentially crash the system or escalate privileges on the system
     (bsc#1194013).
   - CVE-2022-20154: Fixed a use after free due to a race condition in
     lock_sock_nested of sock.c. This could lead to local escalation of
     privilege with System execution privileges needed (bsc#1200599).
   - CVE-2020-26541: Enforce the secure boot forbidden signature database
     (aka dbx) protection mechanism. (bsc#1177282)
   - CVE-2022-2318: Fixed a use-after-free vulnerabilities in the timer
     handler in net/rose/rose_timer.c that allow attackers to crash the
     system without any privileges (bsc#1201251).
   - CVE-2022-26365, CVE-2022-33740, CVE-2022-33741, CVE-2022-33742: Fixed
     multiple potential data leaks with Block and Network devices when using
     untrusted backends (bsc#1200762).

   The following non-security bugs were fixed:

   - audit: fix a race condition with the auditd tracking code (bsc#1197170).
   - block: bio-integrity: Advance seed correctly for larger interval sizes
     (git-fixes).
   - bnxt_en: Remove the setting of dev_port (git-fixes).
   - bonding: fix bond_neigh_init() (git-fixes).
   - dm crypt: Avoid percpu_counter spinlock contention in crypt_page_alloc()
     (git-fixes).
   - drbd: fix duplicate array initializer (git-fixes).
   - drbd: remove assign_p_sizes_qlim (git-fixes).
   - drbd: use bdev_alignment_offset instead of queue_alignment_offset
     (git-fixes).
   - drbd: use bdev based limit helpers in drbd_send_sizes (git-fixes).
   - exec: Force single empty string when argv is empty (bsc#1200571).
   - ext4: fix bug_on ext4_mb_use_inode_pa (bsc#1200810).
   - ext4: fix bug_on in __es_tree_search (bsc#1200809).
   - ext4: fix bug_on in ext4_writepages (bsc#1200872).
   - ext4: fix overhead calculation to account for the reserved gdt blocks
     (bsc#1200869).
   - ext4: fix race condition between ext4_write and ext4_convert_inline_data
     (bsc#1200807).
   - ext4: fix symlink file size not match to file content (bsc#1200868).
   - ext4: fix use-after-free in ext4_rename_dir_prepare (bsc#1200871).
   - ext4: force overhead calculation if the s_overhead_cluster makes no
     sense (bsc#1200870).
   - ext4: limit length to bitmap_maxbytes - blocksize in punch_hole
     (bsc#1200806).
   - ext4: make variable "count" signed (bsc#1200820).
   - fs-writeback: writeback_sb_inodes Recalculate 'wrote' according skipped
     pages (bsc#1200873).
   - i915_vma: Rename vma_lookup to i915_vma_lookup (git-fixes).
   - ibmvnic: Properly dispose of all skbs during a failover (bsc#1200925).
   - init: Initialize noop_backing_dev_info early (bsc#1200822).
   - inotify: show inotify mask flags in proc fdinfo (bsc#1200600).
   - Input: bcm5974 - set missing URB_NO_TRANSFER_DMA_MAP urb flag
     (git-fixes).
   - Input: elan_i2c - fix regulator enable count imbalance after
     suspend/resume (git-fixes).
   - Input: elan_i2c - move regulator_[en|dis]able() out of
     elan_[en|dis]able_power() (git-fixes).
   - Input: omap4-keypad - fix pm_runtime_get_sync() error checking
     (git-fixes).
   - iomap: iomap_write_failed fix (bsc#1200829).
   - kvm: fix wrong exception emulation in check_rdtsc (git-fixes).
   - kvm: i8254: remove redundant assignment to pointer s (git-fixes).
   - KVM: LAPIC: Prevent setting the tscdeadline timer if the lapic is hw
     disabled (git-fixes).
   - KVM: s390: vsie/gmap: reduce gmap_rmap overhead (git-fixes).
   - KVM: x86: Allocate new rmap and large page tracking when moving memslot
     (git-fixes).
   - KVM: x86: always stop emulation on page fault (git-fixes).
   - KVM: x86: clear stale x86_emulate_ctxt->intercept value (git-fixes).
   - KVM: x86: clflushopt should be treated as a no-op by emulation
     (git-fixes).
   - kvm: x86/cpuid: Only provide CPUID leaf 0xA if host has architectural
     PMU (git-fixes).
   - KVM: x86: Do not force set BSP bit when local APIC is managed by
     userspace (git-fixes).
   - KVM: x86: do not modify masked bits of shared MSRs (git-fixes).
   - KVM: x86/emulator: Defer not-present segment check in
     __load_segment_descriptor() (git-fixes).
   - KVM: x86: Fix emulation in writing cr8 (git-fixes).
   - KVM: x86: Fix off-by-one error in kvm_vcpu_ioctl_x86_setup_mce
     (git-fixes).
   - KVM: x86: Fix potential put_fpu() w/o load_fpu() on MPX platform
     (git-fixes).
   - KVM: x86: Fix x86_decode_insn() return when fetching insn bytes fails
     (git-fixes).
   - KVM: x86: Free wbinvd_dirty_mask if vCPU creation fails (git-fixes).
   - kvm: x86: Improve emulation of CPUID leaves 0BH and 1FH (git-fixes).
   - KVM: x86: Inject #GP if guest attempts to toggle CR4.LA57 in 64-bit mode
     (git-fixes).
   - KVM: x86: Manually calculate reserved bits when loading PDPTRS
     (git-fixes).
   - KVM: x86: Manually flush collapsible SPTEs only when toggling flags
     (git-fixes).
   - KVM: x86: Migrate the PIT only if vcpu0 is migrated, not any BSP
     (git-fixes).
   - KVM: x86/mmu: Treat invalid shadow pages as obsolete (git-fixes).
   - KVM: x86: Refactor prefix decoding to prevent Spectre-v1/L1TF attacks
     (git-fixes).
   - KVM: x86: Remove spurious clearing of async #PF MSR (git-fixes).
   - KVM: x86: Remove spurious kvm_mmu_unload() from vcpu destruction path
     (git-fixes).
   - KVM: x86: remove stale comment from struct x86_emulate_ctxt (git-fixes).
   - KVM: x86: set ctxt->have_exception in x86_decode_insn() (git-fixes).
   - kvm: x86: skip populating logical dest map if apic is not sw enabled
     (git-fixes).
   - KVM: x86: Trace the original requested CPUID function in kvm_cpuid()
     (git-fixes).
   - KVM: x86: Update vCPU's hv_clock before back to guest when tsc_offset is
     adjusted (git-fixes).
   - md: bcache: check the return value of kzalloc() in
     detached_dev_do_request() (git-fixes).
   - md: fix an incorrect NULL check in does_sb_need_changing (git-fixes).
   - md: fix an incorrect NULL check in md_reload_sb (git-fixes).
   - md/raid0: Ignore RAID0 layout if the second zone has only one device
     (git-fixes).
   - mm: add vma_lookup(), update find_vma_intersection() comments
     (git-fixes).
   - net/mlx5: Avoid double free of root ns in the error flow path
     (git-fixes).
   - net/mlx5e: Replace reciprocal_scale in TX select queue function
     (git-fixes).
   - net/mlx5e: Switch to Toeplitz RSS hash by default (git-fixes).
   - net/mlx5: Fix auto group size calculation (git-fixes).
   - net: qed: Disable aRFS for NPAR and 100G (git-fixes).
   - net: qede: Disable aRFS for NPAR and 100G (git-fixes).
   - net: stmmac: update rx tail pointer register to fix rx dma hang issue
     (git-fixes).
   - NFSD: Fix possible sleep during nfsd4_release_lockowner() (git-fixes).
   - NFS: Further fixes to the writeback error handling (git-fixes).
   - PCI/ACPI: Allow D3 only if Root Port can signal and wake from D3
     (git-fixes).
   - PCI: Tidy comments (git-fixes).
   - platform/chrome: cros_ec_proto: Send command again when timeout occurs     (git-fixes).
   - powerpc/idle: Fix return value of __setup() handler (bsc#1065729).
   - powerpc/perf: Fix the threshold compare group constraint for power9
     (bsc#1065729).
   - powerpc/rtas: Allow ibm,platform-dump RTAS call with null buffer address
     (bsc#1200343 ltc#198477).
   - qed: Enable automatic recovery on error condition (bsc#1196964).
   - raid5: introduce MD_BROKEN (git-fixes).
   - s390: fix detection of vector enhancements facility 1 vs. vector packed
     decimal facility (git-fixes).
   - s390: fix strrchr() implementation (git-fixes).
   - s390/ftrace: fix ftrace_update_ftrace_func implementation (git-fixes).
   - s390/gmap: do not unconditionally call pte_unmap_unlock() in
     __gmap_zap() (git-fixes).
   - s390/gmap: validate VMA in __gmap_zap() (git-fixes).
   - s390/mm: fix VMA and page table handling code in storage key handling
     functions (git-fixes).
   - s390/mm: validate VMA in PGSTE manipulation functions (git-fixes).
   - scsi: dc395x: Fix a missing check on list iterator (git-fixes).
   - scsi: ufs: qcom: Add a readl() to make sure ref_clk gets enabled
     (git-fixes).
   - scsi: ufs: qcom: Fix ufs_qcom_resume() (git-fixes).
   - SUNRPC: Fix the calculation of xdr->end in xdr_get_next_encode_buffer()
     (git-fixes).
   - target: remove an incorrect unmap zeroes data deduction (git-fixes).
   - tracing: Fix return value of trace_pid_write() (git-fixes).
   - usb: musb: Fix missing of_node_put() in omap2430_probe (git-fixes).
   - USB: serial: option: add Quectel BG95 modem (git-fixes).
   - USB: storage: karma: fix rio_karma_init return (git-fixes).
   - usb: usbip: add missing device lock on tweak configuration cmd
     (git-fixes).
   - usb: usbip: fix a refcount leak in stub_probe() (git-fixes).
   - video: fbdev: clcdfb: Fix refcount leak in clcdfb_of_vram_setup
     (bsc#1129770)
   - writeback: Avoid skipping inode writeback (bsc#1200813).
   - writeback: Fix inode->i_io_list not be protected by inode->i_lock error
     (bsc#1200821).


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 Server 12-SP5:

      zypper in -t patch SUSE-SLE-SERVER-12-SP5-2022-2377=1



Package List:

   - SUSE Linux Enterprise Server 12-SP5 (noarch):

      kernel-devel-azure-4.12.14-16.103.1
      kernel-source-azure-4.12.14-16.103.1

   - SUSE Linux Enterprise Server 12-SP5 (x86_64):

      kernel-azure-4.12.14-16.103.1
      kernel-azure-base-4.12.14-16.103.1
      kernel-azure-base-debuginfo-4.12.14-16.103.1
      kernel-azure-debuginfo-4.12.14-16.103.1
      kernel-azure-debugsource-4.12.14-16.103.1
      kernel-azure-devel-4.12.14-16.103.1
      kernel-syms-azure-4.12.14-16.103.1


References:

   https://www.suse.com/security/cve/CVE-2020-26541.html
   https://www.suse.com/security/cve/CVE-2021-4157.html
   https://www.suse.com/security/cve/CVE-2022-1012.html
   https://www.suse.com/security/cve/CVE-2022-1679.html
   https://www.suse.com/security/cve/CVE-2022-20132.html
   https://www.suse.com/security/cve/CVE-2022-20141.html
   https://www.suse.com/security/cve/CVE-2022-20154.html
   https://www.suse.com/security/cve/CVE-2022-2318.html
   https://www.suse.com/security/cve/CVE-2022-26365.html
   https://www.suse.com/security/cve/CVE-2022-29900.html
   https://www.suse.com/security/cve/CVE-2022-29901.html
   https://www.suse.com/security/cve/CVE-2022-33740.html
   https://www.suse.com/security/cve/CVE-2022-33741.html
   https://www.suse.com/security/cve/CVE-2022-33742.html
   https://www.suse.com/security/cve/CVE-2022-33981.html
   https://bugzilla.suse.com/1065729
   https://bugzilla.suse.com/1129770
   https://bugzilla.suse.com/1177282
   https://bugzilla.suse.com/1194013
   https://bugzilla.suse.com/1196964
   https://bugzilla.suse.com/1197170
   https://bugzilla.suse.com/1199482
   https://bugzilla.suse.com/1199487
   https://bugzilla.suse.com/1199657
   https://bugzilla.suse.com/1200343
   https://bugzilla.suse.com/1200571
   https://bugzilla.suse.com/1200599
   https://bugzilla.suse.com/1200600
   https://bugzilla.suse.com/1200604
   https://bugzilla.suse.com/1200605
   https://bugzilla.suse.com/1200608
   https://bugzilla.suse.com/1200619
   https://bugzilla.suse.com/1200692
   https://bugzilla.suse.com/1200762
   https://bugzilla.suse.com/1200806
   https://bugzilla.suse.com/1200807
   https://bugzilla.suse.com/1200809
   https://bugzilla.suse.com/1200810
   https://bugzilla.suse.com/1200813
   https://bugzilla.suse.com/1200820
   https://bugzilla.suse.com/1200821
   https://bugzilla.suse.com/1200822
   https://bugzilla.suse.com/1200829
   https://bugzilla.suse.com/1200868
   https://bugzilla.suse.com/1200869
   https://bugzilla.suse.com/1200870
   https://bugzilla.suse.com/1200871
   https://bugzilla.suse.com/1200872
   https://bugzilla.suse.com/1200873
   https://bugzilla.suse.com/1200925
   https://bugzilla.suse.com/1201080
   https://bugzilla.suse.com/1201251