Univention Corporate Server 4.3 erratum 588 (security)

This updates the Linux kernel to version 4.9.189, which addresses (among
others) the following security issues:
* The print_binder_ref_olocked function in drivers/android/binder.c allows
  local users to obtain sensitive address information by reading " ref *desc
  *node" lines in a debugfs file. (CVE-2018-20509)
* The print_binder_transaction_ilocked function in drivers/android/binder.c
  allows local users to obtain sensitive address information by reading
  "*from *code *flags" lines in a debugfs file. (CVE-2018-20510)
* Insufficient access control in the Intel(R) PROSet/Wireless WiFi Software
  driver may allow an unauthenticated user to potentially enable denial of
  service via adjacent access. (CVE-2019-0136)
* The Bluetooth BR/EDR specification up to and including version 5.1 permits
  sufficiently low encryption key length and does not prevent an attacker
  from influencing the key length negotiation. This allows practical
  brute-force attacks (aka "KNOB") that can decrypt traffic and inject
  arbitrary ciphertext without the victim noticing. (CVE-2019-9506)
* A flaw was found in the Linux kernel's freescale hypervisor manager
  implementation. A parameter passed to an ioctl was incorrectly validated
  and used in size calculations for the page size calculation. An attacker
  can use this flaw to crash the system, corrupt memory, or create other
  adverse security affects. (CVE-2019-10142)
* The Linux kernel allows page->_refcount reference count overflow, with
  resultant use-after-free issues, if about 140 GiB of RAM exists. This is
  related to fs/fuse/dev.c, fs/pipe.c, fs/splice.c, include/linux/mm.h,
  include/linux/pipe_fs_i.h, kernel/trace/trace.c, mm/gup.c, and
  mm/hugetlb.c. It can occur with FUSE requests. (CVE-2019-11487)
* There is a use-after-free caused by a malicious USB device in the
  drivers/media/v4l2-core/v4l2-dev.c driver because
  drivers/media/radio/radio-raremono.c does not properly allocate memory.
  (CVE-2019-15211)
* There is a double-free caused by a malicious USB device in the
  drivers/usb/misc/rio500.c driver. (CVE-2019-15212)
* There is a use-after-free caused by a malicious USB device in the
  drivers/media/usb/cpia2/cpia2_usb.c driver. (CVE-2019-15215)
* There is a NULL pointer dereference caused by a malicious USB device in the
  drivers/usb/misc/yurex.c driver. (CVE-2019-15216)
* There is a NULL pointer dereference caused by a malicious USB device in the
  drivers/media/usb/siano/smsusb.c driver. (CVE-2019-15218)
* There is a NULL pointer dereference caused by a malicious USB device in the
  drivers/usb/misc/sisusbvga/sisusb.c driver. (CVE-2019-15219)
* There is a use-after-free caused by a malicious USB device in the
  drivers/net/wireless/intersil/p54/p54usb.c driver. (CVE-2019-15220)
* There is a NULL pointer dereference caused by a malicious USB device in the
  sound/usb/line6/pcm.c driver. (CVE-2019-15221)
* There is a use-after-free in atalk_proc_exit, related to
  net/appletalk/atalk_proc.c, net/appletalk/ddp.c, and
  net/appletalk/sysctl_net_atalk.c. (CVE-2019-15292)
* An issue was discovered in xfs_setattr_nonsize in fs/xfs/xfs_iops.c in the
  Linux kernel. XFS partially wedges when a chgrp fails on account of being
  out of disk quota. xfs_setattr_nonsize is failing to unlock the ILOCK after
  the xfs_qm_vop_chown_reserve call fails. This is primarily a local DoS
  attack vector, but it might result as well in remote DoS if the XFS
  filesystem is exported for instance via NFS. (CVE-2019-15538)
* There is an out-of-bounds array access in __xfrm_policy_unlink, which will
  cause denial of service, because verify_newpolicy_info in
  net/xfrm/xfrm_user.c mishandles directory validation. (CVE-2019-15666)
* In the Linux kernel there is a memory leak in
  drivers/scsi/libsas/sas_expander.c when SAS expander discovery fails. This
  will cause a BUG and denial of service. (CVE-2019-15807)
* fm10k_init_module in drivers/net/ethernet/intel/fm10k/fm10k_main.c has a
  NULL pointer dereference because there is no -ENOMEM upon an
  alloc_workqueue failure. (CVE-2019-15924)
* Out of bounds access exists in the functions
  ath6kl_wmi_pstream_timeout_event_rx and ath6kl_wmi_cac_event_rx in the file
  drivers/net/wireless/ath/ath6kl/wmi.c. (CVE-2019-15926)