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

    Date19 Mar 2019
    CategorySuSE
    674
    Posted ByLinuxSecurity Advisories
    An update that fixes three vulnerabilities is now available.
    
       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.
    
    Description:
    
       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):
    
          kgraft-patch-3_12_61-52_125-default-12-2.1
          kgraft-patch-3_12_61-52_125-xen-12-2.1
          kgraft-patch-3_12_61-52_128-default-10-2.1
          kgraft-patch-3_12_61-52_128-xen-10-2.1
          kgraft-patch-3_12_61-52_133-default-9-2.1
          kgraft-patch-3_12_61-52_133-xen-9-2.1
          kgraft-patch-3_12_61-52_136-default-9-2.1
          kgraft-patch-3_12_61-52_136-xen-9-2.1
          kgraft-patch-3_12_61-52_141-default-8-2.1
          kgraft-patch-3_12_61-52_141-xen-8-2.1
          kgraft-patch-3_12_61-52_146-default-6-2.1
          kgraft-patch-3_12_61-52_146-xen-6-2.1
    
    
    References:
    
       https://www.suse.com/security/cve/CVE-2018-5391.html
       https://www.suse.com/security/cve/CVE-2019-7221.html
       https://www.suse.com/security/cve/CVE-2019-9213.html
       https://bugzilla.suse.com/1103098
       https://bugzilla.suse.com/1124734
       https://bugzilla.suse.com/1128378
    
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