Security update for the Linux Kernel (Live Patch 34 for SLE 12 SP1)

SUSE Security Update: Security update for the Linux Kernel (Live Patch 34 for SLE 12 SP1)
Announcement ID: SUSE-SU-2019:1767-1
Rating: important
References: #1102682 #1133191
Cross-References: CVE-2018-5390 CVE-2019-11487
Affected Products:
  • SUSE Linux Enterprise Server for SAP 12-SP2
  • SUSE Linux Enterprise Server for SAP 12-SP1
  • SUSE Linux Enterprise Server 12-SP2-LTSS
  • SUSE Linux Enterprise Server 12-SP1-LTSS

An update that fixes two vulnerabilities is now available.

Description:

This update for the Linux Kernel 3.12.74-60_64_115 fixes several issues.
The following security issues were fixed:

  • CVE-2019-11487: The Linux kernel allowed 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 (bsc#1133191).
  • CVE-2018-5390: Linux kernel could be forced to make very expensive calls to tcp_collapse_ofo_queue() and tcp_prune_ofo_queue() for every incoming packet which can lead to a denial of service (bsc#1102682).

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 Linux Enterprise Server for SAP 12-SP2:
    zypper in -t patch SUSE-SLE-SAP-12-SP2-2019-1766=1
  • SUSE Linux Enterprise Server for SAP 12-SP1:
    zypper in -t patch SUSE-SLE-SAP-12-SP1-2019-1767=1
  • SUSE Linux Enterprise Server 12-SP2-LTSS:
    zypper in -t patch SUSE-SLE-SERVER-12-SP2-2019-1766=1
  • SUSE Linux Enterprise Server 12-SP1-LTSS:
    zypper in -t patch SUSE-SLE-SERVER-12-SP1-2019-1767=1

Package List:

  • SUSE Linux Enterprise Server for SAP 12-SP2 (ppc64le x86_64):
    • kgraft-patch-4_4_121-92_114-default-2-2.1
  • SUSE Linux Enterprise Server for SAP 12-SP1 (x86_64):
    • kgraft-patch-3_12_74-60_64_115-default-2-2.1
    • kgraft-patch-3_12_74-60_64_115-xen-2-2.1
  • SUSE Linux Enterprise Server 12-SP2-LTSS (ppc64le x86_64):
    • kgraft-patch-4_4_121-92_114-default-2-2.1
  • SUSE Linux Enterprise Server 12-SP1-LTSS (x86_64):
    • kgraft-patch-3_12_74-60_64_115-default-2-2.1
    • kgraft-patch-3_12_74-60_64_115-xen-2-2.1

References: