SUSE-SU-2017:2791-1: important: Security update for Linux Kernel Live Patch 21 for SLE 12 SP1

[sle-security-updates at lists.suse.com]

   SUSE Security Update: Security update for Linux Kernel Live Patch 21 for SLE 12 SP1
______________________________________________________________________________

Announcement ID:    SUSE-SU-2017:2791-1
Rating:             important
References:         #1038564 #1042892 #1045327 #1052311 #1052368 
                    
Cross-References:   CVE-2017-1000112 CVE-2017-15274 CVE-2017-8890
                    CVE-2017-9242
Affected Products:
                    SUSE Linux Enterprise Server for SAP 12-SP1
                    SUSE Linux Enterprise Server 12-SP1-LTSS
______________________________________________________________________________

   An update that solves four vulnerabilities and has one
   errata is now available.

Description:

   This update for the Linux Kernel 3.12.74-60_64_60 fixes several issues.

   The following security bugs were fixed:

   - CVE-2017-15274: security/keys/keyctl.c in the Linux kernel did not
     consider the case of a NULL payload in conjunction with a nonzero length
     value, which allowed local users to cause a denial of service (NULL
     pointer dereference and OOPS) via a crafted add_key or keyctl system
     call (bsc#1045327).
   - CVE-2017-1000112: Updated patch for this issue to be in sync with the
     other livepatches. Description of the issue: Prevent race condition in
     net-packet code that could have been exploited by unprivileged users to
     gain root access (bsc#1052368, bsc#1052311).
   - CVE-2017-9242: The __ip6_append_data function in net/ipv6/ip6_output.c
     was too late in checking whether an overwrite of an skb data structure
     may occur, which allowed local users to cause a denial of service
     (system crash) via crafted system calls (bsc#1042892).
   - CVE-2017-8890: The inet_csk_clone_lock function in
     net/ipv4/inet_connection_sock.c allowed attackers to cause a denial of
     service (double free) or possibly have unspecified other impact by
     leveraging use of the accept system call (bsc#1038564).


Patch Instructions:

   To install this SUSE Security Update use YaST online_update.
   Alternatively you can run the command listed for your product:

   - SUSE Linux Enterprise Server for SAP 12-SP1:

      zypper in -t patch SUSE-SLE-SAP-12-SP1-2017-1732=1

   - SUSE Linux Enterprise Server 12-SP1-LTSS:

      zypper in -t patch SUSE-SLE-SERVER-12-SP1-2017-1732=1

   To bring your system up-to-date, use "zypper patch".


Package List:

   - SUSE Linux Enterprise Server for SAP 12-SP1 (x86_64):

      kgraft-patch-3_12_74-60_64_60-default-2-4.1
      kgraft-patch-3_12_74-60_64_60-xen-2-4.1

   - SUSE Linux Enterprise Server 12-SP1-LTSS (x86_64):

      kgraft-patch-3_12_74-60_64_60-default-2-4.1
      kgraft-patch-3_12_74-60_64_60-xen-2-4.1


References:

   https://www.suse.com/security/cve/CVE-2017-1000112.html
   https://www.suse.com/security/cve/CVE-2017-15274.html
   https://www.suse.com/security/cve/CVE-2017-8890.html
   https://www.suse.com/security/cve/CVE-2017-9242.html
   https://bugzilla.suse.com/1038564
   https://bugzilla.suse.com/1042892
   https://bugzilla.suse.com/1045327
   https://bugzilla.suse.com/1052311
   https://bugzilla.suse.com/1052368