SUSE Security Update: Security update for the Linux Kernel (Live Patch 0 for
 SLE 12 SP4)
______________________________________________________________________________

Announcement ID:    SUSE-SU-2019:1674-1
Rating:             important
References:         #1133191 #1135280 #1136446 #1136935 #1137597 
                    
Cross-References:   CVE-2019-11085 CVE-2019-11477 CVE-2019-11478
                    CVE-2019-11487 CVE-2019-3846
Affected Products:
                    SUSE Linux Enterprise Live Patching 12-SP4
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   An update that fixes 5 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:

   - CVE-2019-3846: A flaw that allowed an attacker to corrupt memory and
     possibly escalate privileges was found in the mwifiex kernel module
     while connecting to a malicious wireless network (bsc#1136446).
   - CVE-2019-11477: A sequence of SACKs may have been crafted by a remote
     attacker such that one can trigger an integer overflow, leading to a
     kernel panic. (bsc#1137586).
   - CVE-2019-11478: It was possible to send a crafted sequence of SACKs
     which would fragment the TCP retransmission queue. A remote attacker may
     have been able to further exploit the fragmented queue to cause an
     expensive linked-list walk for subsequent SACKs received for that same
     TCP connection. (bsc#1137586)
   - CVE-2019-11487: The Linux kernel allowed page->_refcount reference
 count
     overflow, with resultant use-after-free issues, if about 140 GiB of RAM
     exists. This is related to fs/fuse/dev.c, fs/pipe.c, fs/splice.c,
     include/linux/mm.h, include/linux/pipe_fs_i.h, kernel/trace/trace.c,
     mm/gup.c, and mm/hugetlb.c. It can occur with FUSE requests
     (bsc#1133191).
   - CVE-2019-11085: Insufficient input validation in Kernel Mode Driver in
     Intel(R) i915 Graphics may allowed an authenticated user to potentially
     enable escalation of privilege via local access (bsc#1135280).


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 Live Patching 12-SP4:

      zypper in -t patch SUSE-SLE-Live-Patching-12-SP4-2019-1666=1
 SUSE-SLE-Live-Patching-12-SP4-2019-1674=1 SUSE-SLE-Live-Patching-12-SP4-2019-1679=1



Package List:

   - SUSE Linux Enterprise Live Patching 12-SP4 (ppc64le x86_64):

      kgraft-patch-4_12_14-94_41-default-5-2.13.1
      kgraft-patch-4_12_14-94_41-default-debuginfo-5-2.13.1
      kgraft-patch-4_12_14-95_3-default-4-2.1
      kgraft-patch-4_12_14-95_6-default-3-2.1
      kgraft-patch-SLE12-SP4_Update_0-debugsource-5-2.13.1


References:

   https://www.suse.com/security/cve/CVE-2019-11085.html
   https://www.suse.com/security/cve/CVE-2019-11477.html
   https://www.suse.com/security/cve/CVE-2019-11478.html
   https://www.suse.com/security/cve/CVE-2019-11487.html
   https://www.suse.com/security/cve/CVE-2019-3846.html
   https://bugzilla.suse.com/1133191
   https://bugzilla.suse.com/1135280
   https://bugzilla.suse.com/1136446
   https://bugzilla.suse.com/1136935
   https://bugzilla.suse.com/1137597

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