Security update for the Linux Kernel

Announcement ID: SUSE-SU-2019:1870-1
Rating: important
References:
Cross-References:
CVSS scores:
  • CVE-2018-20836 ( SUSE ): 6.2 CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H
  • CVE-2018-20836 ( NVD ): 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
  • CVE-2018-20836 ( NVD ): 8.1 CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
  • CVE-2018-5390 ( SUSE ): 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • CVE-2018-5390 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • CVE-2018-5390 ( NVD ): 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • CVE-2018-7191 ( SUSE ): 5.5 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  • CVE-2018-7191 ( NVD ): 5.5 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  • CVE-2019-11487 ( SUSE ): 7.8 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2019-11487 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2019-11487 ( NVD ): 7.8 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2019-12456 ( SUSE ): 7.8 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2019-12456 ( NVD ): 7.8 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2019-12614 ( SUSE ): 6.2 CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • CVE-2019-12614 ( NVD ): 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • CVE-2019-12818 ( SUSE ): 4.1 CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H
  • CVE-2019-12818 ( NVD ): 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Products:
  • Public Cloud Module 12
  • SUSE Linux Enterprise High Performance Computing 12 SP2
  • SUSE Linux Enterprise High Performance Computing 12 SP3
  • SUSE Linux Enterprise High Performance Computing 12 SP4
  • SUSE Linux Enterprise High Performance Computing 12 SP5
  • SUSE Linux Enterprise Server 12
  • SUSE Linux Enterprise Server 12 SP1
  • SUSE Linux Enterprise Server 12 SP1 LTSS 12-SP1
  • SUSE Linux Enterprise Server 12 SP2
  • SUSE Linux Enterprise Server 12 SP3
  • SUSE Linux Enterprise Server 12 SP4
  • SUSE Linux Enterprise Server 12 SP5
  • SUSE Linux Enterprise Server for SAP Applications 12
  • SUSE Linux Enterprise Server for SAP Applications 12 SP1
  • SUSE Linux Enterprise Server for SAP Applications 12 SP2
  • SUSE Linux Enterprise Server for SAP Applications 12 SP3
  • SUSE Linux Enterprise Server for SAP Applications 12 SP4
  • SUSE Linux Enterprise Server for SAP Applications 12 SP5

An update that solves seven vulnerabilities and has three security fixes can now be installed.

Description:

The SUSE Linux Enterprise 12 SP1 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

  • CVE-2018-5390 aka "SegmentSmack": A remote attacker even with relatively low bandwidth could have caused lots of CPU usage by triggering the worst case scenario during IP and/or TCP fragment reassembly (bsc#1102340)
  • CVE-2018-7191: In the tun subsystem in the Linux kernel, dev_get_valid_name was not called before register_netdevice. This allowed local users to cause a denial of service (NULL pointer dereference and panic) via an ioctl(TUNSETIFF) call with a dev name containing a / character. (bnc#1135603)
  • CVE-2018-20836: A race condition in smp_task_timedout() and smp_task_done() in drivers/scsi/libsas/sas_expander.c, could have lead to a use-after-free. (bnc#1134395)
  • CVE-2019-12614: An unchecked kstrdup might have allowed an attacker to cause denial of service (a NULL pointer dereference and system crash). (bnc#1137194)
  • CVE-2019-12818: The nfc_llcp_build_tlv function in net/nfc/llcp_commands.c may have returned NULL. If the caller did not check for this, it would trigger a NULL pointer dereference. This would cause denial of service. (bnc#1138293)
  • CVE-2019-12456: An issue in the MPT3COMMAND case in _ctl_ioctl_main() allowed local users to cause a denial of service or possibly have unspecified other impact by changing the value of ioc_number between two kernel reads of that value, aka a "double fetch" vulnerability. (bsc#1136922)
  • CVE-2019-11487: An attacker could have triggered use-after-free via page reference count overflow on slow filesystems with at least of 140 GiB of RAM available. (bnc#1133190)

The following non-security bugs were fixed:

  • fuse: Don't access pipe->buffers without pipe_lock() (Prerequisity for CVE-2019-11487, bsc#1133190).
  • fuse: call pipe_buf_release() under pipe lock (Prerequisity for CVE-2019-11487, bsc#1133190).
  • mm: /proc/pid/maps: Check permissions when opening proc pid maps (bsc#1130159).
  • pipe: add pipe_buf_get() helper (Prerequisity for CVE-2019-11487, bsc#1133190).
  • tcp: refine memory limit test in tcp_fragment() after CVE-2019-11478 fix (bsc#1139751).
  • x86/bugs: do not default to IBRS even on SKL (bsc#1112824).

Special Instructions and Notes:

  • Please reboot the system after installing this update.

Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Alternatively you can run the command listed for your product:

  • Public Cloud Module 12
    zypper in -t patch SUSE-SLE-Module-Public-Cloud-12-2019-1870=1
  • SUSE Linux Enterprise Server for SAP Applications 12 SP1
    zypper in -t patch SUSE-SLE-SAP-12-SP1-2019-1870=1
  • SUSE Linux Enterprise Server 12 SP1 LTSS 12-SP1
    zypper in -t patch SUSE-SLE-SERVER-12-SP1-2019-1870=1

Package List:

  • Public Cloud Module 12 (nosrc x86_64)
    • kernel-ec2-3.12.74-60.64.118.1
  • Public Cloud Module 12 (x86_64)
    • kernel-ec2-debuginfo-3.12.74-60.64.118.1
    • kernel-ec2-extra-3.12.74-60.64.118.1
    • kernel-ec2-devel-3.12.74-60.64.118.1
    • kernel-ec2-debugsource-3.12.74-60.64.118.1
    • kernel-ec2-extra-debuginfo-3.12.74-60.64.118.1
  • SUSE Linux Enterprise Server for SAP Applications 12 SP1 (nosrc x86_64)
    • kernel-xen-3.12.74-60.64.118.1
    • kernel-default-3.12.74-60.64.118.1
  • SUSE Linux Enterprise Server for SAP Applications 12 SP1 (x86_64)
    • kernel-xen-base-3.12.74-60.64.118.1
    • kernel-default-debugsource-3.12.74-60.64.118.1
    • kgraft-patch-3_12_74-60_64_118-xen-1-2.3.1
    • kernel-xen-debuginfo-3.12.74-60.64.118.1
    • kernel-default-base-debuginfo-3.12.74-60.64.118.1
    • kgraft-patch-3_12_74-60_64_118-default-1-2.3.1
    • kernel-default-debuginfo-3.12.74-60.64.118.1
    • kernel-default-devel-3.12.74-60.64.118.1
    • kernel-xen-base-debuginfo-3.12.74-60.64.118.1
    • kernel-xen-devel-3.12.74-60.64.118.1
    • kernel-xen-debugsource-3.12.74-60.64.118.1
    • kernel-syms-3.12.74-60.64.118.1
    • kernel-default-base-3.12.74-60.64.118.1
  • SUSE Linux Enterprise Server for SAP Applications 12 SP1 (noarch)
    • kernel-devel-3.12.74-60.64.118.1
    • kernel-source-3.12.74-60.64.118.1
    • kernel-macros-3.12.74-60.64.118.1
  • SUSE Linux Enterprise Server 12 SP1 LTSS 12-SP1 (nosrc ppc64le s390x x86_64)
    • kernel-default-3.12.74-60.64.118.1
  • SUSE Linux Enterprise Server 12 SP1 LTSS 12-SP1 (ppc64le s390x x86_64)
    • kernel-default-debugsource-3.12.74-60.64.118.1
    • kernel-default-base-debuginfo-3.12.74-60.64.118.1
    • kernel-default-debuginfo-3.12.74-60.64.118.1
    • kernel-default-devel-3.12.74-60.64.118.1
    • kernel-syms-3.12.74-60.64.118.1
    • kernel-default-base-3.12.74-60.64.118.1
  • SUSE Linux Enterprise Server 12 SP1 LTSS 12-SP1 (noarch)
    • kernel-devel-3.12.74-60.64.118.1
    • kernel-source-3.12.74-60.64.118.1
    • kernel-macros-3.12.74-60.64.118.1
  • SUSE Linux Enterprise Server 12 SP1 LTSS 12-SP1 (s390x)
    • kernel-default-man-3.12.74-60.64.118.1
  • SUSE Linux Enterprise Server 12 SP1 LTSS 12-SP1 (nosrc x86_64)
    • kernel-xen-3.12.74-60.64.118.1
  • SUSE Linux Enterprise Server 12 SP1 LTSS 12-SP1 (x86_64)
    • kernel-xen-base-3.12.74-60.64.118.1
    • kgraft-patch-3_12_74-60_64_118-xen-1-2.3.1
    • kernel-xen-debuginfo-3.12.74-60.64.118.1
    • kgraft-patch-3_12_74-60_64_118-default-1-2.3.1
    • kernel-xen-base-debuginfo-3.12.74-60.64.118.1
    • kernel-xen-devel-3.12.74-60.64.118.1
    • kernel-xen-debugsource-3.12.74-60.64.118.1

References: