Hash: SHA256

             AUSCERT External Security Bulletin Redistribution

                   Security update for the Linux Kernel
                              18 January 2022


        AusCERT Security Bulletin Summary

Product:           Linux Kernel
Publisher:         SUSE
Operating System:  SUSE
Impact/Access:     Increased Privileges     -- Existing Account      
                   Denial of Service        -- Existing Account      
                   Access Confidential Data -- Remote/Unauthenticated
                   Reduced Security         -- Existing Account      
Resolution:        Patch/Upgrade
CVE Names:         CVE-2021-45486 CVE-2021-45485 CVE-2021-43976
                   CVE-2021-43975 CVE-2021-33098 CVE-2021-28715
                   CVE-2021-28714 CVE-2021-28713 CVE-2021-28712
                   CVE-2021-28711 CVE-2021-4002 CVE-2021-0935
                   CVE-2021-0920 CVE-2020-27820 CVE-2019-15126
                   CVE-2019-9503 CVE-2019-9502 CVE-2019-9501

Reference:         ESB-2022.0205

Original Bulletin: 

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SUSE Security Update: Security update for the Linux Kernel


Announcement ID:   SUSE-SU-2022:0090-1
Rating:            important
References:        #1114648 #1124431 #1167162 #1179599 #1183678 #1183897
                   #1184804 #1185727 #1185762 #1187167 #1189126 #1189305
                   #1189841 #1190358 #1191229 #1191384 #1192032 #1192145
                   #1192267 #1192740 #1192845 #1192847 #1192877 #1192946
                   #1192974 #1193231 #1193306 #1193318 #1193440 #1193442
                   #1193731 #1194087 #1194094
Cross-References:  CVE-2019-15126 CVE-2020-27820 CVE-2021-0920 CVE-2021-0935
                   CVE-2021-28711 CVE-2021-28712 CVE-2021-28713 CVE-2021-28714
                   CVE-2021-28715 CVE-2021-33098 CVE-2021-4002 CVE-2021-43975
                   CVE-2021-43976 CVE-2021-45485 CVE-2021-45486
Affected Products:
                   SUSE Linux Enterprise Real Time Extension 12-SP5

An update that solves 15 vulnerabilities, contains one feature and has 18 fixes
is now available.


The SUSE Linux Enterprise 12 SP5 RT kernel was updated to receive various
security and bugfixes.
The following security bugs were fixed:

  o CVE-2019-15126: Fixed a vulnerability in Broadcom and Cypress Wi-Fi chips,
    used in RPi family of devices aka "Kr00k". (bsc#1167162)
  o CVE-2020-27820: Fixed a vulnerability where a use-after-frees in nouveau's
    postclose() handler could happen if removing device. (bsc#1179599)
  o CVE-2021-0920: Fixed a local privilege escalation due to an use after free
    bug in unix_gc. (bsc#1193731)
  o CVE-2021-0935: Fixed out of bounds write due to a use after free which
    could lead to local escalation of privilege with System execution
    privileges needed in ip6_xmit. (bsc#1192032)
  o CVE-2021-4002: Added a missing TLB flush that could lead to leak or
    corruption of data in hugetlbfs. (bsc#1192946)
  o CVE-2021-28711: Fixed a rogue backends that could cause DoS of guests via
    high frequency events by hardening blkfront against event channel storms.
  o CVE-2021-28712: Fixed a rogue backends that could cause DoS of guests via
    high frequency events by hardening netfront against event channel storms.
  o CVE-2021-28713: Fixed a rogue backends that could cause DoS of guests via
    high frequency events by hardening hvc_xen against event channel storms.
  o CVE-2021-28714: Fixed an issue where a guest could force Linux netback
    driver to hog large amounts of kernel memory by fixing rx queue stall
    detection. (bsc#1193442)
  o CVE-2021-28715: Fixed an issue where a guest could force Linux netback
    driver to hog large amounts of kernel memory by do not queueing unlimited
    number of packages. (bsc#1193442)
  o CVE-2021-33098: Fixed a potential denial of service in Intel(R) Ethernet
    ixgbe driver due to improper input validation. (bsc#1192877)
  o CVE-2021-43975: Fixed a flaw in hw_atl_utils_fw_rpc_wait that could allow
    an attacker (who can introduce a crafted device) to trigger an
    out-of-bounds write via a crafted length value. (bsc#1192845)
  o CVE-2021-43976: Fixed a flaw that could allow an attacker (who can connect
    a crafted USB device) to cause a denial of service. (bsc#1192847)
  o CVE-2021-45485: Fixed an information leak because of certain use of a hash
    table which use IPv6 source addresses. (bsc#1194094)
  o CVE-2021-45486: Fixed an information leak because the hash table is very
    small in net/ipv4/route.c. (bsc#1194087)

The following non-security bugs were fixed:

  o blk-mq: do not deactivate hctx if managed irq isn't used (bsc#1185762).
  o cifs: fix missed refcounting of ipc tcon (git-fixes).
  o cifs: nosharesock should be set on new server (git-fixes).
  o config: INPUT_EVBUG=n (bsc#1192974). Debug driver unsuitable for
    production, only enabled on ppc64.
  o constraints: Build aarch64 on recent ARMv8.1 builders. Request asimdrdm
    feature which is available only on recent ARMv8.1 CPUs. This should prevent
    scheduling the kernel on an older slower builder.
  o edac/amd64: Handle three rank interleaving mode (bsc#1114648).
  o elfcore: correct reference to CONFIG_UML (git-fixes).
  o fuse: release pipe buf after last use (bsc#1193318).
  o genirq: Move initial affinity setup to irq_startup() (bsc#1193231).
  o genirq: Provide IRQCHIP_AFFINITY_PRE_STARTUP (bsc#1193231).
  o genirq: Remove mask argument from setup_affinity() (bsc#1193231).
  o genirq: Rename setup_affinity() to irq_setup_affinity() (bsc#1193231).
  o genirq: Split out irq_startup() code (bsc#1193231).
  o kernel-*-subpackage: Add dependency on kernel scriptlets (bsc#1192740).
  o kernel-binary.spec.in Stop templating the scriptlets for subpackages (bsc#
    1190358). The script part for base package case is completely separate from
    the part for subpackages. Remove the part for subpackages from the base
    package script and use the KMP scripts for subpackages instead.
  o kernel-binary.spec.in: add zstd to BuildRequires if used
  o kernel-binary.spec.in: make sure zstd is supported by kmod if used
  o kernel-binary.spec: Check for no kernel signing certificates. Also remove
    unused variable.
  o kernel-binary.spec: Define $image as rpm macro (bsc#1189841).
  o kernel-binary.spec: Do not fail silently when KMP is empty (bsc#1190358).
    Copy the code from kernel-module-subpackage that deals with empty KMPs.
  o kernel-binary.spec: Do not sign kernel when no key provided (bsc#1187167).
  o kernel-binary.spec: Fix kernel-default-base scriptlets after packaging
  o kernel-binary.spec: Require dwarves for kernel-binary-devel when BTF is
    enabled (jsc#SLE-17288). About the pahole version: v1.18 should be bare
    mnimum, v1.22 should be fully functional, for now we ship git snapshot with
    fixes on top of v1.21.
  o kernel-binary.spec: suse-kernel-rpm-scriptlets required for uninstall as
    well. Fixes: e98096d5cf85 ("rpm: Abolish scritplet templating (bsc#
  o kernel-cert-subpackage: Fix certificate location in scriptlets (bsc#
    1189841). Fixes: d9a1357edd73 ("rpm: Define $certs as rpm macro (bsc#
  o kernel-source.spec: install-kernel-tools also required on 15.4
  o kernel-spec-macros: Since rpm 4.17 %verbose is unusable (bsc#1191229). The
    semantic changed in an incompatible way so invoking the macro now causes a
    build failure.
  o lpfc: Reintroduce old IRQ probe logic (bsc#1183897).
  o net: mana: Allow setting the number of queues while the NIC is down (jsc#
    SLE-18779, bsc#1185727).
  o net: mana: Fix spelling mistake "calledd" -> "called" (jsc#SLE-18779, bsc#
  o net: mana: Fix the netdev_err()'s vPort argument in mana_init_port() (jsc#
    SLE-18779, bsc#1185727).
  o net: mana: Improve the HWC error handling (jsc#SLE-18779, bsc#1185727).
  o net: mana: Support hibernation and kexec (jsc#SLE-18779, bsc#1185727).
  o net: mana: Use kcalloc() instead of kzalloc() (jsc#SLE-18779, bsc#1185727).
  o net: usb: lan78xx: lan78xx_phy_init(): use PHY_POLL instead of "0" if no
    IRQ is available (git-fixes).
  o nvme-fc: avoid race between time out and tear down (bsc#1185762).
  o nvme-fc: remove freeze/unfreeze around update_nr_hw_queues (bsc#1185762).
  o nvme-fc: update hardware queues before using them (bsc#1185762).
  o nvme-fc: wait for queues to freeze before calling update_hr_hw_queues (bsc#
  o nvme-pci: add NO APST quirk for Kioxia device (git-fixes).
  o platform/x86: hp_accel: Fix an error handling path in 'lis3lv02d_probe()'
  o platform/x86: thinkpad_acpi: Fix bitwise vs. logical warning (git-fixes).
  o post.sh: detect /usr mountpoint too
  o readme: Modernize build instructions.
  o recordmcount.pl: fix typo in s390 mcount regex (bsc#1192267).
  o recordmcount.pl: look for jgnop instruction as well as bcrl on s390 (bsc#
  o rpm/kernel-binary.spec.in: Use kmod-zstd provide. This makes it possible to
    use kmod with ZSTD support on non-Tumbleweed.
  o rpm/kernel-binary.spec.in: avoid conflicting suse-release suse-release had
    arbitrary values in staging, we can't use it for dependencies. The
    filesystem one has to be enough (boo#1184804).
  o rpm/kernel-binary.spec.in: do not strip vmlinux again (bsc#1193306) After
    usrmerge, vmlinux file is not named vmlinux-<version>, but simply vmlinux.
    And this is not reflected in STRIP_KEEP_SYMTAB we set. So fix this by
    removing the dash...
  o rpm/kernel-binary.spec: Use only non-empty certificates.
  o rpm/kernel-obs-build.spec.in: make builds reproducible (bsc#1189305)
  o rpm/kernel-source.rpmlintrc: ignore new include/config files In 5.13, since
    0e0345b77ac4, config files have no longer .h suffix. Adapt the zero-length
    check. Based on Martin Liska's change.
  o rpm/kernel-source.spec.in: do some more for vanilla_only Make sure: *
    sources are NOT executable * env is not used as interpreter * timestamps
    are correct We do all this for normal kernel builds, but not for
    vanilla_only kernels (linux-next and vanilla).
  o rpm: Abolish image suffix (bsc#1189841). This is used only with vanilla
    kernel which is not supported in any way. The only effect is has is that
    the image and initrd symlinks are created with this suffix. These symlinks
    are not used except on s390 where the unsuffixed symlinks are used by zipl.
    There is no reason why a vanilla kernel could not be used with zipl as well
    as it's quite unexpected to not be able to boot when only a vanilla kernel
    is installed. Finally we now have a backup zipl kernel so if the vanilla
    kernel is indeed unsuitable the backup kernel can be used.
  o rpm: Abolish scritplet templating (bsc#1189841). Outsource kernel-binary
    and KMP scriptlets to suse-module-tools. This allows fixing bugs in the
    scriptlets as well as defining initrd regeneration policy independent of
    the kernel packages.
  o rpm: Define $certs as rpm macro (bsc#1189841). Also pass around only the
    shortened hash rather than full filename. As has been discussed in bsc#
    1124431 comment 51 https://bugzilla.suse.com/show_bug.cgiid=1124431#c51
    the placement of the certificates is an API which cannot be changed unless
    we can ensure that no two kernels that use different certificate location
    can be built with the same certificate.
  o rpm: Fold kernel-devel and kernel-source scriptlets into spec files (bsc#
    1189841). These are unchanged since 2011 when they were introduced. No need
    to track them separately.
  o rpm: fix kmp install path
  o rpm: support gz and zst compression methods Extend commit 18fcdff43a00
    ("rpm: support compressed modules") for compression methods other than xz.
  o rpm: use _rpmmacrodir (boo#1191384)
  o scsi: core: Fix bad pointer dereference when ehandler kthread is invalid
  o scsi: core: Put LLD module refcnt after SCSI device is released
  o scsi: iscsi: Adjust iface sysfs attr detection (git-fixes).
  o scsi: lpfc: Add additional debugfs support for CMF (bsc#1192145).
  o scsi: lpfc: Adjust CMF total bytes and rxmonitor (bsc#1192145).
  o scsi: lpfc: Cap CMF read bytes to MBPI (bsc#1192145).
  o scsi: lpfc: Change return code on I/Os received during link bounce (bsc#
  o scsi: lpfc: Fix NPIV port deletion crash (bsc#1192145).
  o scsi: lpfc: Fix leaked lpfc_dmabuf mbox allocations with NPIV (bsc#
  o scsi: lpfc: Fix lpfc_force_rscn ndlp kref imbalance (bsc#1192145).
  o scsi: lpfc: Fix non-recovery of remote ports following an unsolicited LOGO
  o scsi: lpfc: Trigger SLI4 firmware dump before doing driver cleanup (bsc#
  o scsi: lpfc: Update lpfc version to (bsc#1192145).
  o scsi: mpt3sas: Fix kernel panic during drive powercycle test (git-fixes).
  o scsi: qla2xxx: Fix gnl list corruption (git-fixes).
  o scsi: qla2xxx: Fix mailbox direction flags in qla2xxx_get_adapter_id()
  o scsi: qla2xxx: Format log strings only if needed (git-fixes).
  o scsi: qla2xxx: Relogin during fabric disturbance (git-fixes).
  o scsi: qla2xxx: edif: Fix EDIF bsg (git-fixes).
  o scsi: qla2xxx: edif: Fix app start delay (git-fixes).
  o scsi: qla2xxx: edif: Fix app start fail (git-fixes).
  o scsi: qla2xxx: edif: Fix off by one bug in qla_edif_app_getfcinfo()
  o scsi: qla2xxx: edif: Flush stale events and msgs on session down
  o scsi: qla2xxx: edif: Increase ELS payload (git-fixes).
  o tracing: Check pid filtering when creating events (git-fixes).
  o tracing: Fix pid filtering when triggers are attached (git-fixes).
  o tty: hvc: replace BUG_ON() with negative return value (git-fixes).
  o usb-storage: Add compatibility quirk flags for iODD 2531/2541 (git-fixes).
  o usb: dwc2: hcd_queue: Fix use of floating point literal (git-fixes).
  o usb: serial: option: add Fibocom FM101-GL variants (git-fixes).
  o usb: serial: option: add Quectel EC200S-CN module support (git-fixes).
  o usb: serial: option: add Telit LE910Cx composition 0x1204 (git-fixes).
  o usb: serial: option: add Telit LE910S1 0x9200 composition (git-fixes).
  o usb: serial: option: add prod. id for Quectel EG91 (git-fixes).
  o usb: serial: qcserial: add EM9191 QDL support (git-fixes).
  o x86/msi: Force affinity setup before startup (bsc#1193231).
  o x86/pkey: Fix undefined behaviour with PKRU_WD_BIT (bsc#1114648).
  o x86/sme: Explicitly map new EFI memmap table as encrypted (bsc#1114648).
  o x86/xen: Add xenpv_restore_regs_and_return_to_usermode() (bsc#1114648).
  o xen/blkfront: do not take local copy of a request from the ring page
  o xen/blkfront: do not trust the backend response data blindly (git-fixes).
  o xen/blkfront: read response from backend only once (git-fixes).
  o xen/netfront: disentangle tx_skb_freelist (git-fixes).
  o xen/netfront: do not read data from request on the ring page (git-fixes).
  o xen/netfront: do not trust the backend response data blindly (git-fixes).
  o xen/netfront: read response from backend only once (git-fixes).
  o xen: sync include/xen/interface/io/ring.h with Xen's newest version

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 Real Time Extension 12-SP5:
    zypper in -t patch SUSE-SLE-RT-12-SP5-2022-90=1

Package List:

  o SUSE Linux Enterprise Real Time Extension 12-SP5 (x86_64):
  o SUSE Linux Enterprise Real Time Extension 12-SP5 (noarch):


  o https://www.suse.com/security/cve/CVE-2019-15126.html
  o https://www.suse.com/security/cve/CVE-2020-27820.html
  o https://www.suse.com/security/cve/CVE-2021-0920.html
  o https://www.suse.com/security/cve/CVE-2021-0935.html
  o https://www.suse.com/security/cve/CVE-2021-28711.html
  o https://www.suse.com/security/cve/CVE-2021-28712.html
  o https://www.suse.com/security/cve/CVE-2021-28713.html
  o https://www.suse.com/security/cve/CVE-2021-28714.html
  o https://www.suse.com/security/cve/CVE-2021-28715.html
  o https://www.suse.com/security/cve/CVE-2021-33098.html
  o https://www.suse.com/security/cve/CVE-2021-4002.html
  o https://www.suse.com/security/cve/CVE-2021-43975.html
  o https://www.suse.com/security/cve/CVE-2021-43976.html
  o https://www.suse.com/security/cve/CVE-2021-45485.html
  o https://www.suse.com/security/cve/CVE-2021-45486.html
  o https://bugzilla.suse.com/1114648
  o https://bugzilla.suse.com/1124431
  o https://bugzilla.suse.com/1167162
  o https://bugzilla.suse.com/1179599
  o https://bugzilla.suse.com/1183678
  o https://bugzilla.suse.com/1183897
  o https://bugzilla.suse.com/1184804
  o https://bugzilla.suse.com/1185727
  o https://bugzilla.suse.com/1185762
  o https://bugzilla.suse.com/1187167
  o https://bugzilla.suse.com/1189126
  o https://bugzilla.suse.com/1189305
  o https://bugzilla.suse.com/1189841
  o https://bugzilla.suse.com/1190358
  o https://bugzilla.suse.com/1191229
  o https://bugzilla.suse.com/1191384
  o https://bugzilla.suse.com/1192032
  o https://bugzilla.suse.com/1192145
  o https://bugzilla.suse.com/1192267
  o https://bugzilla.suse.com/1192740
  o https://bugzilla.suse.com/1192845
  o https://bugzilla.suse.com/1192847
  o https://bugzilla.suse.com/1192877
  o https://bugzilla.suse.com/1192946
  o https://bugzilla.suse.com/1192974
  o https://bugzilla.suse.com/1193231
  o https://bugzilla.suse.com/1193306
  o https://bugzilla.suse.com/1193318
  o https://bugzilla.suse.com/1193440
  o https://bugzilla.suse.com/1193442
  o https://bugzilla.suse.com/1193731
  o https://bugzilla.suse.com/1194087
  o https://bugzilla.suse.com/1194094

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