SUSE-SU-2021:3978-1: important: Security update for the Linux RT Kernel

sle-updates at sle-updates at
Thu Dec 9 14:15:46 UTC 2021

   SUSE Security Update: Security update for the Linux RT Kernel

Announcement ID:    SUSE-SU-2021:3978-1
Rating:             important
References:         #1094840 #1133021 #1152489 #1153275 #1169263 
                    #1169514 #1170269 #1176940 #1179599 #1188601 
                    #1190523 #1190795 #1191790 #1191851 #1191958 
                    #1191961 #1191980 #1192045 #1192229 #1192273 
                    #1192328 #1192718 #1192740 #1192745 #1192750 
                    #1192753 #1192781 #1192802 #1192896 #1192906 
                    #1192918 #1192987 #1192998 #1193002 SLE-22573 
Cross-References:   CVE-2020-27820 CVE-2021-0941 CVE-2021-20322
                    CVE-2021-31916 CVE-2021-34981 CVE-2021-37159
CVSS scores:
                    CVE-2020-27820 (SUSE): 3.1 CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:L
                    CVE-2021-0941 (SUSE): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
                    CVE-2021-20322 (SUSE): 7.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
                    CVE-2021-31916 (NVD) : 6.7 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
                    CVE-2021-31916 (SUSE): 6.8 CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
                    CVE-2021-34981 (SUSE): 7.5 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
                    CVE-2021-37159 (NVD) : 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
                    CVE-2021-37159 (SUSE): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
                    CVE-2021-43389 (SUSE): 4.7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected Products:
                    SUSE MicroOS 5.0
                    SUSE Linux Enterprise Module for Realtime 15-SP2

   An update that solves 7 vulnerabilities, contains one
   feature and has 27 fixes is now available.


   The SUSE Linux Enterprise 15 SP2 kernel was updated to receive various
   security and bugfixes.

   The following security bugs were fixed:

   - Unprivileged BPF has been disabled by default to reduce attack surface
     as too many security issues have happened in the past (jsc#SLE-22573)

     You can reenable via systemctl setting
   /proc/sys/kernel/unprivileged_bpf_disabled to 0.
   (kernel.unprivileged_bpf_disabled = 0)

   - CVE-2021-0941: In bpf_skb_change_head of filter.c, there is a possible
     out of bounds read due to a use after free. This could lead to local
     escalation of privilege with System execution privileges needed. User
     interaction is not needed for exploitation (bnc#1192045).
   - CVE-2021-31916: An out-of-bounds (OOB) memory write flaw was found in
     list_devices in drivers/md/dm-ioctl.c in the Multi-device driver module
     in the Linux kernel A bound check failure allowed an attacker with
     special user (CAP_SYS_ADMIN) privilege to gain access to out-of-bounds
     memory leading to a system crash or a leak of internal kernel
     information. The highest threat from this vulnerability is to system
     availability (bnc#1192781).
   - CVE-2021-20322: Make the ipv4 and ipv6 ICMP exception caches less
     predictive to avoid information leaks about UDP ports in use.
   - CVE-2021-34981: Fixed file refcounting in cmtp when cmtp_attach_device
     fails  (bsc#1191961).
   - CVE-2021-43389: There was an array-index-out-of-bounds flaw in the
     detach_capi_ctr function in drivers/isdn/capi/kcapi.c (bnc#1191958).
   - CVE-2021-37159: hso_free_net_device in drivers/net/usb/hso.c called
     unregister_netdev without checking for the NETREG_REGISTERED state,
     leading to a use-after-free and a double free (bnc#1188601).
   - CVE-2020-27820: Fixed a use-after-free in nouveau's postclose() handler
     that could have happened during device or driver removal (bnc#1179599).

   The following non-security bugs were fixed:

   - ABI: sysfs-kernel-slab: Document some stats (git-fixes).
   - ALSA: hda: Reduce udelay() at SKL+ position reporting (git-fixes).
   - ALSA: ua101: fix division by zero at probe (git-fixes).
   - ALSA: usb-audio: Add Audient iD14 to mixer map quirk table (git-fixes).
   - ALSA: usb-audio: Add Schiit Hel device to mixer map quirk table
   - ASoC: cs42l42: Correct some register default values (git-fixes).
   - ASoC: cs42l42: Defer probe if request_threaded_irq() returns
     EPROBE_DEFER (git-fixes).
   - ASoC: cs42l42: Do not set defaults for volatile registers (git-fixes).
   - ASoC: dt-bindings: cs42l42: Correct description of ts-inv (git-fixes).
   - ASoC: mediatek: mt8195: Remove unsued irqs_lock (git-fixes).
   - ASoC: rockchip: Use generic dmaengine code (git-fixes).
   - ata: sata_mv: Fix the error handling of mv_chip_id() (git-fixes).
   - ath10k: fix control-message timeout (git-fixes).
   - ath10k: fix division by zero in send path (git-fixes).
   - ath10k: fix max antenna gain unit (git-fixes).
   - ath10k: Fix missing frame timestamp for beacon/probe-resp (git-fixes).
   - ath6kl: fix control-message timeout (git-fixes).
   - ath6kl: fix division by zero in send path (git-fixes).
   - ath9k: Fix potential interrupt storm on queue reset (git-fixes).
   - auxdisplay: ht16k33: Connect backlight to fbdev (git-fixes).
   - auxdisplay: ht16k33: Fix frame buffer device blanking (git-fixes).
   - auxdisplay: img-ascii-lcd: Fix lock-up when displaying empty string
   - b43: fix a lower bounds test (git-fixes).
   - b43legacy: fix a lower bounds test (git-fixes).
   - Bluetooth: btmtkuart: fix a memleak in mtk_hci_wmt_sync (git-fixes).
   - Bluetooth: fix init and cleanup of sco_conn.timeout_work (git-fixes).
   - bnxt_en: reject indirect blk offload when hw-tc-offload is off
     (jsc#SLE-8372 bsc#1153275).
   - bpf: Add kconfig knob for disabling unpriv bpf by default (jsc#SLE-22573)
   - bpf: Disallow unprivileged bpf by default (jsc#SLE-22573).
   - bpf: Fix potential race in tail call compatibility check (git-fixes).
   - btrfs: block-group: Rework documentation of check_system_chunk function
   - btrfs: do not ignore error from btrfs_next_leaf() when inserting
     checksums (bsc#1193002).
   - btrfs: fix deadlock between chunk allocation and chunk btree
     modifications (bsc#1192896).
   - btrfs: fix fsync failure and transaction abort after writes to prealloc
     extents (bsc#1193002).
   - btrfs: fix lost inode on log replay after mix of fsync, rename and inode
     eviction (bsc#1192998).
   - btrfs: fix memory ordering between normal and ordered work functions
   - btrfs: fix race causing unnecessary inode logging during link and rename
   - btrfs: make checksum item extension more efficient (bsc#1193002).
   - btrfs: update comments for chunk allocation -ENOSPC cases (bsc#1192896).
   - cgroup/cpuset: Change references of cpuset_mutex to cpuset_rwsem
   - config: disable unprivileged BPF by default (jsc#SLE-22573)
   - crypto: caam - disable pkc for non-E SoCs (git-fixes).
   - crypto: qat - detect PFVF collision after ACK (git-fixes).
   - crypto: qat - disregard spurious PFVF interrupts (git-fixes).
   - driver core: add a min_align_mask field to struct device_dma_parameters
   - drm/amdgpu: fix warning for overflow check (git-fixes).
   - drm/msm: Fix potential NULL dereference in DPU SSPP (git-fixes).
   - drm/sun4i: Fix macros in sun8i_csc.h (git-fixes).
   - drm/v3d: fix wait for TMU write combiner flush (git-fixes).
   - drm: prevent spectre issue in vmw_execbuf_ioctl (bsc#1192802).
   - EDAC/sb_edac: Fix top-of-high-memory value for Broadwell/Haswell
   - elfcore: fix building with clang (bsc#1169514).
   - exfat: fix erroneous discard when clear cluster bit (git-fixes).
   - exfat: handle wrong stream entry size in exfat_readdir() (git-fixes).
   - exfat: properly set s_time_gran (bsc#1192328).
   - exfat: truncate atimes to 2s granularity (bsc#1192328).
   - firmware/psci: fix application of sizeof to pointer (git-fixes).
   - fuse: fix page stealing (bsc#1192718).
   - genirq: Provide IRQCHIP_AFFINITY_PRE_STARTUP (bsc#1152489).
   - gpio: mpc8xxx: Use 'devm_gpiochip_add_data()' to simplify the code and
     avoid a leak (git-fixes).
   - gve: Add netif_set_xps_queue call (bsc#1176940).
   - gve: Add rx buffer pagecnt bias (bsc#1176940).
   - gve: Allow pageflips on larger pages (bsc#1176940).
   - gve: DQO: avoid unused variable warnings (bsc#1176940).
   - gve: Track RX buffer allocation failures (bsc#1176940).
   - HID: u2fzero: clarify error check and length calculations (git-fixes).
   - HID: u2fzero: properly handle timeouts in usb_submit_urb (git-fixes).
   - hwmon: (pmbus/lm25066) Add offset coefficients (git-fixes).
   - hwmon: (pmbus/lm25066) Let compiler determine outer dimension of
     lm25066_coeff (git-fixes).
   - hwmon: Fix possible memleak in __hwmon_device_register() (git-fixes).
   - hwrng: mtk - Force runtime pm ops for sleep ops (git-fixes).
   - ibmvnic: check failover_pending in login response (bsc#1190523
   - ibmvnic: delay complete() (bsc#1094840 ltc#167098 git-fixes).
   - ibmvnic: do not stop queue in xmit (bsc#1192273 ltc#194629).
   - ibmvnic: Process crqs after enabling interrupts (bsc#1192273 ltc#194629).
   - iio: dac: ad5446: Fix ad5622_write() return value (git-fixes).
   - Input: elantench - fix misreporting trackpoint coordinates (bsc#1192918).
   - Input: i8042 - Add quirk for Fujitsu Lifebook T725 (bsc#1191980).
   - kABI: Fix kABI after 36950f2da1ea (bsc#1191851).
   - kernel-*-subpackage: Add dependency on kernel scriptlets (bsc#1192740).
   - KVM: s390: extend kvm_s390_shadow_fault to return entry pointer
   - KVM: s390: index kvm->arch.idle_mask by vcpu_idx (bsc#1133021).
   - KVM: s390: split kvm_s390_logical_to_effective (bsc#1133021).
   - KVM: s390: VSIE: correctly handle MVPG when in VSIE (bsc#1133021).
   - libertas: Fix possible memory leak in probe and disconnect (git-fixes).
   - libertas_tf: Fix possible memory leak in probe and disconnect
   - media: cedrus: Fix SUNXI tile size calculation (git-fixes).
   - media: cx23885: Fix snd_card_free call on null card pointer (git-fixes).
   - media: cxd2880-spi: Fix a null pointer dereference on error handling
     path (git-fixes).
   - media: dvb-frontends: mn88443x: Handle errors of clk_prepare_enable()
   - media: dvb-usb: fix ununit-value in az6027_rc_query (git-fixes).
   - media: em28xx: add missing em28xx_close_extension (git-fixes).
   - media: em28xx: Do not use ops->suspend if it is NULL (git-fixes).
   - media: i2c: ths8200 needs V4L2_ASYNC (git-fixes).
   - media: ite-cir: IR receiver stop working after receive overflow
   - media: mtk-vpu: Fix a resource leak in the error handling path of
     'mtk_vpu_probe()' (git-fixes).
   - media: mxl111sf: change mutex_init() location (git-fixes).
   - media: radio-wl1273: Avoid card name truncation (git-fixes).
   - media: si470x: Avoid card name truncation (git-fixes).
   - media: staging/intel-ipu3: css: Fix wrong size comparison
     imgu_css_fw_init (git-fixes).
   - media: TDA1997x: handle short reads of hdmi info frame (git-fixes).
   - media: tm6000: Avoid card name truncation (git-fixes).
   - media: v4l2-ioctl: Fix check_ext_ctrls (git-fixes).
   - media: v4l2-ioctl: S_CTRL output the right value (git-fixes).
   - memory: fsl_ifc: fix leak of irq and nand_irq in fsl_ifc_ctrl_probe
   - memstick: avoid out-of-range warning (git-fixes).
   - memstick: jmb38x_ms: use appropriate free function in
     jmb38x_ms_alloc_host() (git-fixes).
   - mm/hugetlb: initialize hugetlb_usage in mm_init (bsc#1192906).
   - mmc: mxs-mmc: disable regulator on error and in the remove function
   - mmc: sdhci-omap: Fix NULL pointer exception if regulator is not
     configured (git-fixes).
   - mmc: sdhci: Map more voltage level to SDHCI_POWER_330 (git-fixes).
   - mt76: mt76x02: fix endianness warnings in mt76x02_mac.c (git-fixes).
   - mwifiex: fix division by zero in fw download path (git-fixes).
   - mwifiex: Send DELBA requests according to spec (git-fixes).
   - net: dsa: felix: re-enable TX flow control in ocelot_port_flush()
   - net: mscc: ocelot: fix hardware timestamp dequeue logic.
   - net: mscc: ocelot: warn when a PTP IRQ is raised for an unknown skb
   - nvme-pci: set min_align_mask (bsc#1191851).
   - objtool: Support Clang non-section symbols in ORC generation
   - ocfs2: do not zero pages beyond i_size (bsc#1190795).
   - ocfs2: fix data corruption on truncate (bsc#1190795).
   - PCI/ACPI: Check for _OSC support in acpi_pci_osc_control_set()
   - PCI/ACPI: Clarify message about _OSC failure (bsc#1169263).
   - PCI/ACPI: Move _OSC query checks to separate function (bsc#1169263).
   - PCI/ACPI: Move supported and control calculations to separate functions
   - PCI/ACPI: Remove unnecessary osc_lock (bsc#1169263).
   - PCI: aardvark: Do not clear status bits of masked interrupts (git-fixes).
   - PCI: aardvark: Do not spam about PIO Response Status (git-fixes).
   - PCI: aardvark: Do not unmask unused interrupts (git-fixes).
   - PCI: aardvark: Fix checking for link up via LTSSM state (git-fixes).
   - PCI: aardvark: Fix reporting Data Link Layer Link Active (git-fixes).
   - PCI: aardvark: Fix return value of MSI domain .alloc() method
   - PCI: aardvark: Read all 16-bits from PCIE_MSI_PAYLOAD_REG (git-fixes).
   - PCI: pci-bridge-emul: Fix emulation of W1C bits (git-fixes).
   - PCI: uniphier: Serialize INTx masking/unmasking and fix the bit
     operation (git-fixes).
   - pinctrl: core: fix possible memory leak in pinctrl_enable() (git-fixes).
   - platform/x86: thinkpad_acpi: Fix bitwise vs. logical warning (git-fixes).
   - power: supply: bq27xxx: Fix kernel crash on IRQ handler register error
   - power: supply: max17042_battery: Prevent int underflow in
     set_soc_threshold (git-fixes).
   - power: supply: max17042_battery: use VFSOC for capacity when no rsns
   - power: supply: rt5033 battery: Change voltage values to ca 5V
   - printk/console: Allow to disable console output by using console="" or
     console=null (bsc#1192753).
   - printk: handle blank console arguments passed in (bsc#1192753).
   - printk: Remove printk.h inclusion in percpu.h (bsc#1192987).
   - qtnfmac: fix potential Spectre vulnerabilities (bsc#1192802).
   - r8152: add a helper function about setting EEE (git-fixes).
   - r8152: Add macpassthru support for ThinkPad Thunderbolt 3 Dock Gen 2
   - r8152: Disable PLA MCU clock speed down (git-fixes).
   - r8152: disable U2P3 for RTL8153B (git-fixes).
   - r8152: divide the tx and rx bottom functions (git-fixes).
   - r8152: do not enable U1U2 with USB_SPEED_HIGH for RTL8153B (git-fixes).
   - r8152: fix runtime resume for linking change (git-fixes).
   - r8152: replace array with linking list for rx information (git-fixes).
   - r8152: reset flow control patch when linking on for RTL8153B (git-fixes).
   - r8152: saving the settings of EEE (git-fixes).
   - r8152: separate the rx buffer size (git-fixes).
   - r8152: use alloc_pages for rx buffer (git-fixes).
   - regulator: dt-bindings: samsung,s5m8767: correct
     s5m8767,pmic-buck-default-dvs-idx property (git-fixes).
   - regulator: s5m8767: do not use reset value as DVS voltage if GPIO DVS is
     disabled (git-fixes).
   - Revert "ibmvnic: check failover_pending in login response" (bsc#1190523
   - Revert "platform/x86: i2c-multi-instantiate: Do not create platform
     device for INT3515 ACPI nodes" (git-fixes).
   - Revert "r8152: adjust the settings about MAC clock speed down for
     RTL8153" (git-fixes).
   - Revert "scsi: ufs: fix a missing check of devm_reset_control_get"
   - Revert "x86/kvm: fix vcpu-id indexed array sizes" (git-fixes).
   - rndis_host: set proper input size for OID_GEN_PHYSICAL_MEDIUM request
   - rsi: fix control-message timeout (git-fixes).
   - rsi: Fix module dev_oper_mode parameter description (git-fixes).
   - rsi: stop thread firstly in rsi_91x_init() error handling (git-fixes).
   - rtl8187: fix control-message timeouts (git-fixes).
   - s390/qeth: fix deadlock during failing recovery (git-fixes).
   - s390/qeth: Fix deadlock in remove_discipline (git-fixes).
   - s390/qeth: fix NULL deref in qeth_clear_working_pool_list() (git-fixes).
   - scsi: be2iscsi: Fix an error handling path in beiscsi_dev_probe()
   - scsi: BusLogic: Fix missing pr_cont() use (git-fixes).
   - scsi: core: Fix spelling in a source code comment (git-fixes).
   - scsi: csiostor: Add module softdep on cxgb4 (git-fixes).
   - scsi: csiostor: Uninitialized data in csio_ln_vnp_read_cbfn()
   - scsi: dc395: Fix error case unwinding (git-fixes).
   - scsi: fdomain: Fix error return code in fdomain_probe() (git-fixes).
   - scsi: FlashPoint: Rename si_flags field (git-fixes).
   - scsi: iscsi: Fix iface sysfs attr detection (git-fixes).
   - scsi: libsas: Use _safe() loop in sas_resume_port() (git-fixes).
   - scsi: mpt3sas: Fix error return value in _scsih_expander_add()
   - scsi: qedf: Add pointer checks in qedf_update_link_speed() (git-fixes).
   - scsi: qedf: Fix error codes in qedf_alloc_global_queues() (git-fixes).
   - scsi: qedi: Fix error codes in qedi_alloc_global_queues() (git-fixes).
   - scsi: qla2xxx: Fix a memory leak in an error path of
     qla2x00_process_els() (git-fixes).
   - scsi: qla2xxx: Make sure that aborted commands are freed (git-fixes).
   - scsi: smartpqi: Fix an error code in pqi_get_raid_map() (git-fixes).
   - scsi: snic: Fix an error message (git-fixes).
   - scsi: ufs-pci: Add quirk for broken auto-hibernate for Intel EHL
   - scsi: ufs: ufshcd-pltfrm: Fix memory leak due to probe defer (git-fixes).
   - serial: 8250_dw: Drop wrong use of ACPI_PTR() (git-fixes).
   - serial: xilinx_uartps: Fix race condition causing stuck TX (git-fixes).
   - staging: r8712u: fix control-message timeout (git-fixes).
   - staging: rtl8192u: fix control-message timeouts (git-fixes).
   - stmmac: platform: Fix signedness bug in stmmac_probe_config_dt()
   - swiotlb: add a IO_TLB_SIZE define (bsc#1191851).
   - swiotlb: clean up swiotlb_tbl_unmap_single (bsc#1191851).
   - swiotlb: do not modify orig_addr in swiotlb_tbl_sync_single
   - swiotlb: factor out a nr_slots helper (bsc#1191851).
   - swiotlb: factor out an io_tlb_offset helper (bsc#1191851).
   - swiotlb: refactor swiotlb_tbl_map_single (bsc#1191851).
   - swiotlb: respect min_align_mask (bsc#1191851).
   - swiotlb: Split size parameter to map/unmap APIs (bsc#1191851).
   - tpm: Check for integer overflow in tpm2_map_response_body() (git-fixes).
   - tracing: Increase PERF_MAX_TRACE_SIZE to handle Sentinel1 and docker
     together (bsc#1192745).
   - Update config files: Add CONFIG_BPF_UNPRIV_DEFAULT_OFF is not set
   - usb: gadget: hid: fix error code in do_config() (git-fixes).
   - usb: iowarrior: fix control-message timeouts (git-fixes).
   - usb: max-3421: Use driver data instead of maintaining a list of bound
     devices (git-fixes).
   - usb: musb: Balance list entry in musb_gadget_queue (git-fixes).
   - usb: serial: keyspan: fix memleak on probe errors (git-fixes).
   - usbnet: fix error return code in usbnet_probe() (git-fixes).
   - usbnet: sanity check for maxpacket (git-fixes).
   - video: fbdev: chipsfb: use memset_io() instead of memset() (git-fixes).
   - virtio-gpu: fix possible memory allocation failure (git-fixes).
   - wcn36xx: Add ability for wcn36xx_smd_dump_cmd_req to pass two's
     complement (git-fixes).
   - wcn36xx: add proper DMA memory barriers in rx path (git-fixes).
   - wcn36xx: Fix HT40 capability for 2Ghz band (git-fixes).
   - x86/ioapic: Force affinity setup before startup (bsc#1152489).
   - x86/msi: Force affinity setup before startup (bsc#1152489).
   - x86/sme: Use #define USE_EARLY_PGTABLE_L5 in mem_encrypt_identity.c
   - x86/xen: Mark cpu_bringup_and_idle() as dead_end_function (git-fixes).
   - xen-pciback: Fix return in pm_ctrl_init() (git-fixes).
   - xen: Fix implicit type conversion (git-fixes).
   - xfs: do not allow log writes if the data device is readonly
   - zram-avoid-race-between-zram_remove-and-disksize_sto.patch:
   - zram-don-t-fail-to-remove-zram-during-unloading-modu.patch:
   - zram-fix-race-between-zram_reset_device-and-disksize.patch:
   - zram-replace-fsync_bdev-with-sync_blockdev.patch: (bsc#1170269).

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 MicroOS 5.0:

      zypper in -t patch SUSE-SUSE-MicroOS-5.0-2021-3978=1

   - SUSE Linux Enterprise Module for Realtime 15-SP2:

      zypper in -t patch SUSE-SLE-Module-RT-15-SP2-2021-3978=1

Package List:

   - SUSE MicroOS 5.0 (x86_64):


   - SUSE Linux Enterprise Module for Realtime 15-SP2 (x86_64):


   - SUSE Linux Enterprise Module for Realtime 15-SP2 (noarch):



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