SUSE-SU-2019:0645-1: important: Security update for the Linux Kernel (Live Patch 33 for SLE 12)

sle-updates at sle-updates at
Tue Mar 19 14:09:46 MDT 2019

   SUSE Security Update: Security update for the Linux Kernel (Live Patch 33 for SLE 12)

Announcement ID:    SUSE-SU-2019:0645-1
Rating:             important
References:         #1103098 #1124734 #1128378 
Cross-References:   CVE-2018-5391 CVE-2019-7221 CVE-2019-9213
Affected Products:
                    SUSE Linux Enterprise Server 12-LTSS

   An update that fixes three vulnerabilities is now available.


   This update for the Linux Kernel 3.12.61-52_125 fixes several issues.

   The following security issues were fixed:

   - CVE-2019-9213: Expand_downwards in mm/mmap.c lacked a check for the mmap
     minimum address, which made it easier for attackers to exploit kernel
     NULL pointer dereferences on non-SMAP platforms. This is related to a
     capability check for the wrong task (bsc#1128378).
   - CVE-2019-7221: Fixed a user-after-free vulnerability in the KVM
     hypervisor related to the emulation of a preemption timer, allowing an
     guest user/process to crash the host kernel. (bsc#1124734).
   - CVE-2018-5391: The Linux kernel was vulnerable to a denial of service
     attack with low rates of specially modified packets targeting IP
     fragment re-assembly. An attacker might have caused a denial of service
     condition by sending specially crafted IP fragments. Various
     vulnerabilities in IP fragmentation have been discovered and fixed over
     the years. 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 Server 12-LTSS:

      zypper in -t patch SUSE-SLE-SERVER-12-2019-645=1 SUSE-SLE-SERVER-12-2019-646=1 SUSE-SLE-SERVER-12-2019-647=1 SUSE-SLE-SERVER-12-2019-648=1 SUSE-SLE-SERVER-12-2019-649=1 SUSE-SLE-SERVER-12-2019-650=1

Package List:

   - SUSE Linux Enterprise Server 12-LTSS (x86_64):



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