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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2022.4005
                   Security update for the Linux Kernel
                              12 August 2022

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Linux Kernel
Publisher:         SUSE
Operating System:  SUSE
Resolution:        Patch/Upgrade
CVE Names:         CVE-2022-36946 CVE-2022-20166 CVE-2022-1462
                   CVE-2021-33656 CVE-2021-33655 CVE-2020-36558
                   CVE-2020-36557  

Original Bulletin: 
   https://www.suse.com/support/update/announcement/2022/suse-su-20222720-1

Comment: CVSS (Max):  7.8 CVE-2021-33655 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
         CVSS Source: SUSE
         Calculator:  https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

- --------------------------BEGIN INCLUDED TEXT--------------------

SUSE Security Update: Security update for the Linux Kernel

______________________________________________________________________________

Announcement ID:   SUSE-SU-2022:2720-1
Rating:            important
References:        #1103269 #1114648 #1190812 #1195775 #1195926 #1198484
                   #1198829 #1200442 #1200598 #1200644 #1200651 #1200910
                   #1201196 #1201381 #1201429 #1201635 #1201636 #1201644
                   #1201651 #1201742 #1201752 #1201930 #1201940 #1201954
                   #1201958
Cross-References:  CVE-2020-36557 CVE-2020-36558 CVE-2021-33655 CVE-2021-33656
                   CVE-2022-1462 CVE-2022-20166 CVE-2022-36946
Affected Products:
                   SUSE Linux Enterprise Server 12-SP5
______________________________________________________________________________

An update that solves 7 vulnerabilities and has 18 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:

  o CVE-2022-36946: Fixed an incorrect packet trucation operation which could
    lead to denial of service (bnc#1201940).
  o CVE-2022-20166: Fixed several possible memory safety issues due to unsafe
    operations (bsc#1200598).
  o CVE-2020-36558: Fixed a race condition involving VT_RESIZEX which could
    lead to a NULL pointer dereference and general protection fault (bnc#
    1200910).
  o CVE-2020-36557: Fixed a race condition between the VT_DISALLOCATE ioctl and
    closing/opening of TTYs could lead to a use-after-free (bnc#1201429).
  o CVE-2021-33656: Fixed memory out of bounds write related to ioctl cmd
    PIO_FONT (bnc#1201636).
  o CVE-2021-33655: Fixed out of bounds write with ioctl FBIOPUT_VSCREENINFO
    (bnc#1201635).
  o CVE-2022-1462: Fixed an out-of-bounds read flaw in the TTY subsystem (bnc#
    1198829).


The following non-security bugs were fixed:

  o Add missing recommends of kernel-install-tools (bsc#1200442)
  o qla2xxx: drop patch which prevented nvme port discovery (bsc#1200651 bsc#
    1200644 bsc#1201954 bsc#1201958).
  o kvm: emulate: do not adjust size of fastop and setcc subroutines (bsc#
    1201930).
  o nfs: avoid NULL pointer dereference when there is unflushed data (bsc#
    1201196).
  o kvm: emulate: Fix SETcc emulation function offsets with SLS (bsc#1201930).
  o lkdtm: Disable return thunks in rodata.c (bsc#1114648).
  o powerpc/64: Move paca allocation later in boot (bsc#1190812).
  o powerpc/fadump: fix PT_LOAD segment for boot memory area (bsc#1103269 ltc#
    169948).
  o powerpc/fadump: make crash memory ranges array allocation generic (bsc#
    1103269 ltc#169948).
  o powerpc: Set crashkernel offset to mid of RMA region (bsc#1190812).
  o rpm/kernel-obs-build.spec.in: Also depend on dracut-systemd (bsc#1195775)
  o rpm/kernel-obs-build.spec.in: add systemd-initrd and terminfo dracut module
    (bsc#1195775)
  o rpm/kernel-obs-build.spec.in: use default dracut modules (bsc#1195926, bsc#
    1198484) Let's iron out the reduced initrd optimisation in Tumbleweed.
    Build full blown dracut initrd with systemd for SLE15 SP4.
  o scsi: qla2xxx: Add a new v2 dport diagnostic feature (bsc#1201958).
  o scsi: qla2xxx: Add debug prints in the device remove path (bsc#1201958).
  o scsi: qla2xxx: Check correct variable in qla24xx_async_gffid() (bsc#
    1201958).
  o scsi: qla2xxx: Fix crash due to stale SRB access around I/O timeouts (bsc#
    1201958).
  o scsi: qla2xxx: Fix discovery issues in FC-AL topology (bsc#1201651).
  o scsi: qla2xxx: Fix erroneous mailbox timeout after PCI error injection (bsc
    #1201958).
  o scsi: qla2xxx: Fix excessive I/O error messages by default (bsc#1201958).
  o scsi: qla2xxx: Fix imbalance vha->vref_count (bsc#1201651).
  o scsi: qla2xxx: Fix incorrect display of max frame size (bsc#1201958).
  o scsi: qla2xxx: Fix losing FCP-2 targets during port perturbation tests (bsc
    #1201958).
  o scsi: qla2xxx: Fix losing FCP-2 targets on long port disable with I/Os (bsc
    #1201958).
  o scsi: qla2xxx: Fix losing target when it reappears during delete (bsc#
    1201958).
  o scsi: qla2xxx: Fix response queue handler reading stale packets (bsc#
    1201651).
  o scsi: qla2xxx: Fix sparse warning for dport_data (bsc#1201651).
  o scsi: qla2xxx: Remove setting of 'req' and 'rsp' parameters (bsc#1201958).
  o scsi: qla2xxx: Remove unused 'ql_dm_tgt_ex_pct' parameter (bsc#1201958).
  o scsi: qla2xxx: Turn off multi-queue for 8G adapters (bsc#1201958).
  o scsi: qla2xxx: Update manufacturer details (bsc#1201958).
  o scsi: qla2xxx: Update version to 10.02.07.500-k (bsc#1201958).
  o scsi: qla2xxx: Update version to 10.02.07.600-k (bsc#1201958).
  o scsi: qla2xxx: Update version to 10.02.07.700-k (bsc#1201958).
  o scsi: qla2xxx: Update version to 10.02.07.800-k (bsc#1201958).
  o scsi: qla2xxx: Wind down adapter after PCIe error (bsc#1201958).
  o scsi: qla2xxx: Zero undefined mailbox IN registers (bsc#1201651).
  o scsi: qla2xxx: edif: Add bsg interface to read doorbell events (bsc#
    1201958).
  o scsi: qla2xxx: edif: Add retry for ELS passthrough (bsc#1201958).
  o scsi: qla2xxx: edif: Fix I/O timeout due to over-subscription (bsc#
    1201958).
  o scsi: qla2xxx: edif: Fix dropped IKE message (bsc#1201651).
  o scsi: qla2xxx: edif: Fix n2n discovery issue with secure target (bsc#
    1201958).
  o scsi: qla2xxx: edif: Fix n2n login retry for secure device (bsc#1201958).
  o scsi: qla2xxx: edif: Fix no login after app start (bsc#1201958).
  o scsi: qla2xxx: edif: Fix no logout on delete for N2N (bsc#1201958).
  o scsi: qla2xxx: edif: Fix potential stuck session in sa update (bsc#
    1201958).
  o scsi: qla2xxx: edif: Fix session thrash (bsc#1201958).
  o scsi: qla2xxx: edif: Fix slow session teardown (bsc#1201958).
  o scsi: qla2xxx: edif: Reduce Initiator-Initiator thrashing (bsc#1201958).
  o scsi: qla2xxx: edif: Reduce N2N thrashing at app_start time (bsc#1201958).
  o scsi: qla2xxx: edif: Reduce disruption due to multiple app start (bsc#
    1201958).
  o scsi: qla2xxx: edif: Remove old doorbell interface (bsc#1201958).
  o scsi: qla2xxx: edif: Send LOGO for unexpected IKE message (bsc#1201958).
  o scsi: qla2xxx: edif: Synchronize NPIV deletion with authentication
    application (bsc#1201958).
  o scsi: qla2xxx: edif: Tear down session if keys have been removed (bsc#
    1201958).
  o scsi: qla2xxx: edif: Wait for app to ack on sess down (bsc#1201958).
  o scsi: qla2xxx: edif: bsg refactor (bsc#1201958).
  o x86/entry: Remove skip_r11rcx (bsc#1201644).
  o x86/retbleed: Add fine grained Kconfig knobs (bsc#1114648).
  o xen/netback: avoid entering xenvif_rx_next_skb() with an empty rx queue
    (bsc#1201381).

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:

  o SUSE Linux Enterprise Server 12-SP5:
    zypper in -t patch SUSE-SLE-SERVER-12-SP5-2022-2720=1

Package List:

  o SUSE Linux Enterprise Server 12-SP5 (x86_64):
       kernel-azure-4.12.14-16.106.1
       kernel-azure-base-4.12.14-16.106.1
       kernel-azure-base-debuginfo-4.12.14-16.106.1
       kernel-azure-debuginfo-4.12.14-16.106.1
       kernel-azure-debugsource-4.12.14-16.106.1
       kernel-azure-devel-4.12.14-16.106.1
       kernel-syms-azure-4.12.14-16.106.1
  o SUSE Linux Enterprise Server 12-SP5 (noarch):
       kernel-devel-azure-4.12.14-16.106.1
       kernel-source-azure-4.12.14-16.106.1


References:

  o https://www.suse.com/security/cve/CVE-2020-36557.html
  o https://www.suse.com/security/cve/CVE-2020-36558.html
  o https://www.suse.com/security/cve/CVE-2021-33655.html
  o https://www.suse.com/security/cve/CVE-2021-33656.html
  o https://www.suse.com/security/cve/CVE-2022-1462.html
  o https://www.suse.com/security/cve/CVE-2022-20166.html
  o https://www.suse.com/security/cve/CVE-2022-36946.html
  o https://bugzilla.suse.com/1103269
  o https://bugzilla.suse.com/1114648
  o https://bugzilla.suse.com/1190812
  o https://bugzilla.suse.com/1195775
  o https://bugzilla.suse.com/1195926
  o https://bugzilla.suse.com/1198484
  o https://bugzilla.suse.com/1198829
  o https://bugzilla.suse.com/1200442
  o https://bugzilla.suse.com/1200598
  o https://bugzilla.suse.com/1200644
  o https://bugzilla.suse.com/1200651
  o https://bugzilla.suse.com/1200910
  o https://bugzilla.suse.com/1201196
  o https://bugzilla.suse.com/1201381
  o https://bugzilla.suse.com/1201429
  o https://bugzilla.suse.com/1201635
  o https://bugzilla.suse.com/1201636
  o https://bugzilla.suse.com/1201644
  o https://bugzilla.suse.com/1201651
  o https://bugzilla.suse.com/1201742
  o https://bugzilla.suse.com/1201752
  o https://bugzilla.suse.com/1201930
  o https://bugzilla.suse.com/1201940
  o https://bugzilla.suse.com/1201954
  o https://bugzilla.suse.com/1201958

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