ESB-2018.3654 - [SUSE] linux kernel: Denial of service - Remote/unauthenticated 2018-11-26

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.3654
         SUSE-SU-2018:3881-1: Security update for the Linux Kernel
                             26 November 2018

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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-2018-18386 CVE-2018-5391 

Reference:         ESB-2018.3640
                   ESB-2018.3590
                   ESB-2018.3563
                   ESB-2018.3377

Original Bulletin: 
   https://www.suse.com/support/update/announcement/2018/suse-su-20183880-1/
   https://www.suse.com/support/update/announcement/2018/suse-su-20183881-1/

Comment: This bulletin contains two (2) SUSE security advisories.

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   SUSE Security Update: Security update for the Linux Kernel (Live Patch 0 for SLE 15)
______________________________________________________________________________

Announcement ID:    SUSE-SU-2018:3880-1
Rating:             important
References:         #1103098 #1112039 
Cross-References:   CVE-2018-18386 CVE-2018-5391
Affected Products:
                    SUSE Linux Enterprise Module for Live Patching 15
______________________________________________________________________________

   An update that fixes two vulnerabilities is now available.

Description:

   This update for the Linux Kernel 4.12.14-23 fixes several issues.

   The following security issues were fixed:

   - CVE-2018-5391: Fixed a denial of service attack with low rates of
     specially modified packets targeting IP fragment re-assembly. An
     attacker may have caused a denial of service condition by sending
     specially crafted IP fragments. The current vulnerability
     (CVE-2018-5391) became exploitable in the Linux kernel with the increase
     of the IP fragment reassembly queue size (bsc#1103098).
   - CVE-2018-18386: The drivers/tty/n_tty.c allowed local attackers (who are
     able to access pseudo terminals) to hang/block further usage of any
     pseudo terminal devices due to an EXTPROC versus ICANON confusion in
     TIOCINQ (bsc#1112039).


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 Module for Live Patching 15:

      zypper in -t patch SUSE-SLE-Module-Live-Patching-15-2018-2768=1



Package List:

   - SUSE Linux Enterprise Module for Live Patching 15 (ppc64le x86_64):

      kernel-livepatch-4_12_14-23-default-6-16.2
      kernel-livepatch-4_12_14-23-default-debuginfo-6-16.2
      kernel-livepatch-SLE15_Update_0-debugsource-6-16.2


References:

   https://www.suse.com/security/cve/CVE-2018-18386.html
   https://www.suse.com/security/cve/CVE-2018-5391.html
   https://bugzilla.suse.com/1103098
   https://bugzilla.suse.com/1112039

______________________________________________________________________________

   SUSE Security Update: Security update for the Linux Kernel (Live Patch 1 for SLE 15)
______________________________________________________________________________

Announcement ID:    SUSE-SU-2018:3881-1
Rating:             important
References:         #1103098 
Cross-References:   CVE-2018-5391
Affected Products:
                    SUSE Linux Enterprise Module for Live Patching 15
______________________________________________________________________________

   An update that fixes one vulnerability is now available.

Description:

   This update for the Linux Kernel 4.12.14-25_3 fixes one issue.

   The following security issue was fixed:

   - CVE-2018-5391: Fixed a denial of service attack with low rates of
     specially modified packets targeting IP fragment re-assembly. An
     attacker may have caused a denial of service condition by sending
     specially crafted IP fragments. The current vulnerability
     (CVE-2018-5391) became exploitable in the Linux kernel with the increase
     of the IP fragment reassembly queue size (bsc#1103098).


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 Module for Live Patching 15:

      zypper in -t patch SUSE-SLE-Module-Live-Patching-15-2018-2767=1 SUSE-SLE-Module-Live-Patching-15-2018-2770=1



Package List:

   - SUSE Linux Enterprise Module for Live Patching 15 (ppc64le x86_64):

      kernel-livepatch-4_12_14-25_3-default-6-2.1
      kernel-livepatch-4_12_14-25_3-default-debuginfo-6-2.1
      kernel-livepatch-4_12_14-25_6-default-6-2.1
      kernel-livepatch-4_12_14-25_6-default-debuginfo-6-2.1


References:

   https://www.suse.com/security/cve/CVE-2018-5391.html
   https://bugzilla.suse.com/1103098

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