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             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.0984
         SUSE-SU-2019:0726-1 Security update for the Linux Kernel
                       (Live Patch 0 for SLE 12 SP4)
                               26 March 2019

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

Product:           linux kernel
Publisher:         SUSE
Operating System:  SUSE
Impact/Access:     Root Compromise   -- Existing Account      
                   Denial of Service -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-9213 CVE-2019-8912 CVE-2019-7221
                   CVE-2019-6974  

Reference:         ESB-2019.0927.2
                   ESB-2019.0914
                   ESB-2019.0892
                   ESB-2019.0675

Original Bulletin: 
   https://www.suse.com/support/update/announcement/2019/suse-su-20190726-1.html

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SUSE Security Update: Security update for the Linux Kernel (Live 

______________________________________________________________________________

Announcement ID:   SUSE-SU-2019:0726-1
Rating:            important
References:        #1124729 #1124734 #1126284 #1128378
Cross-References:  CVE-2019-6974 CVE-2019-7221 CVE-2019-8912 CVE-2019-9213
Affected Products:
                   SUSE Linux Enterprise Live Patching 12-SP4
______________________________________________________________________________

Patch 0 for
SLE 12 SP4)

An update that fixes four vulnerabilities is now available.

Description:

This update for the Linux Kernel 4.12.14-94_41 fixes several issues.
The following security issues were fixed:

  o 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).
  o CVE-2019-8912: af_alg_release() in crypto/af_alg.c neglected to set a NULL
    value for a certain structure member, which could have led to a
    use-after-free in sockfs_setattr (bsc#1126284).
  o 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).
  o CVE-2019-6974: kvm_ioctl_create_device in virt/kvm/kvm_main.c mishandled
    reference counting because of a race condition, leading to a use-after-free
    (bsc#1124729).

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 Live Patching 12-SP4:
    zypper in -t patch SUSE-SLE-Live-Patching-12-SP4-2019-726=1
    SUSE-SLE-Live-Patching-12-SP4-2019-727=1
    SUSE-SLE-Live-Patching-12-SP4-2019-728=1

Package List:

  o SUSE Linux Enterprise Live Patching 12-SP4 (ppc64le x86_64):
       kgraft-patch-4_12_14-94_41-default-4-2.10.2
       kgraft-patch-4_12_14-94_41-default-debuginfo-4-2.10.2
       kgraft-patch-4_12_14-95_3-default-3-2.1
       kgraft-patch-4_12_14-95_6-default-2-2.1
       kgraft-patch-SLE12-SP4_Update_0-debugsource-4-2.10.2


References:

  o https://www.suse.com/security/cve/CVE-2019-6974.html
  o https://www.suse.com/security/cve/CVE-2019-7221.html
  o https://www.suse.com/security/cve/CVE-2019-8912.html
  o https://www.suse.com/security/cve/CVE-2019-9213.html
  o https://bugzilla.suse.com/1124729
  o https://bugzilla.suse.com/1124734
  o https://bugzilla.suse.com/1126284
  o https://bugzilla.suse.com/1128378

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