ESB-2019.1328 - [SUSE] linux kernel: Denial of service - Remote/unauthenticated 2019-04-17

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.1328
         SUSE-SU-2019:0955-1 Security update for the Linux Kernel
                      (Live Patch 28 for SLE 12 SP2)
                               17 April 2019

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           linux kernel
Publisher:         SUSE
Operating System:  SUSE
Impact/Access:     Denial of Service -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-5390  

Reference:         ASB-2019.0012
                   ASB-2018.0221
                   ESB-2018.3590
                   ESB-2018.3140

Original Bulletin: 
   https://www.suse.com/support/update/announcement/2019/suse-su-20190955-1.html

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SUSE Security Update: Security update for the Linux Kernel (Live Patch 28 for
SLE 12 SP2)

______________________________________________________________________________

Announcement ID:   SUSE-SU-2019:0955-1
Rating:            important
References:        #1102682
Cross-References:  CVE-2018-5390
Affected Products:
                   SUSE Linux Enterprise Server for SAP 12-SP2
                   SUSE Linux Enterprise Server 12-SP2-LTSS
______________________________________________________________________________

An update that fixes one vulnerability is now available.

Description:

This update for the Linux Kernel 4.4.121-92_104 fixes one issue.
The following security issue was fixed:

  o CVE-2018-5390: The 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:

  o SUSE Linux Enterprise Server for SAP 12-SP2:
    zypper in -t patch SUSE-SLE-SAP-12-SP2-2019-955=1
  o SUSE Linux Enterprise Server 12-SP2-LTSS:
    zypper in -t patch SUSE-SLE-SERVER-12-SP2-2019-955=1

Package List:

  o SUSE Linux Enterprise Server for SAP 12-SP2 (ppc64le x86_64):
       kgraft-patch-4_4_121-92_104-default-2-2.1
  o SUSE Linux Enterprise Server 12-SP2-LTSS (ppc64le x86_64):
       kgraft-patch-4_4_121-92_104-default-2-2.1


References:

  o https://www.suse.com/security/cve/CVE-2018-5390.html
  o https://bugzilla.suse.com/1102682

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