SUSE Security Update: Security update for the Linux Kernel (Live Patch 26 for SLE 12 SP3)
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Announcement ID:    SUSE-SU-2019:1768-1
Rating:             important
References:         #1133191 
Cross-References:   CVE-2019-11487
Affected Products:
                    SUSE Linux Enterprise Live Patching 12-SP3
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   An update that fixes one vulnerability is now available.

Description:

   This update for the Linux Kernel 4.4.180-94_97 fixes one issue.

   The following security issue was fixed:

   - 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).


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-SP3:

      zypper in -t patch SUSE-SLE-Live-Patching-12-SP3-2019-1768=1



Package List:

   - SUSE Linux Enterprise Live Patching 12-SP3 (ppc64le x86_64):

      kgraft-patch-4_4_180-94_97-default-2-2.1
      kgraft-patch-4_4_180-94_97-default-debuginfo-2-2.1


References:

   https://www.suse.com/security/cve/CVE-2019-11487.html
   https://bugzilla.suse.com/1133191

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