SUSE-SU-2019:1588-1: important: Security update for the Linux Kernel (Live Patch 10 for SLE 15)

[sle-updates at lists.suse.com]

   SUSE Security Update: Security update for the Linux Kernel (Live Patch 10 for SLE 15)
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Announcement ID:    SUSE-SU-2019:1588-1
Rating:             important
References:         #1133191 #1136446 #1136935 #1137597 
Cross-References:   CVE-2019-11477 CVE-2019-11478 CVE-2019-11487
                    CVE-2019-3846
Affected Products:
                    SUSE Linux Enterprise Module for Live Patching 15-SP1
                    SUSE Linux Enterprise Module for Live Patching 15
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   An update that fixes four vulnerabilities is now available.

Description:

   This update for the Linux Kernel 4.12.14-150_17 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).


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 Module for Live Patching 15-SP1:

      zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP1-2019-1588=1

   - SUSE Linux Enterprise Module for Live Patching 15:

      zypper in -t patch SUSE-SLE-Module-Live-Patching-15-2019-1578=1 SUSE-SLE-Module-Live-Patching-15-2019-1580=1



Package List:

   - SUSE Linux Enterprise Module for Live Patching 15-SP1 (ppc64le x86_64):

      kernel-livepatch-4_12_14-195-default-2-4.1

   - SUSE Linux Enterprise Module for Live Patching 15 (ppc64le x86_64):

      kernel-livepatch-4_12_14-150_14-default-2-2.1
      kernel-livepatch-4_12_14-150_14-default-debuginfo-2-2.1
      kernel-livepatch-4_12_14-150_17-default-2-2.1
      kernel-livepatch-4_12_14-150_17-default-debuginfo-2-2.1


References:

   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/1136446
   https://bugzilla.suse.com/1136935
   https://bugzilla.suse.com/1137597