SUSE-SU-2016:0434-1: important: Security update for kernel live patch 1

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

   SUSE Security Update: Security update for kernel live patch 1
______________________________________________________________________________

Announcement ID:    SUSE-SU-2016:0434-1
Rating:             important
References:         #916225 #940342 #951542 #951625 #953052 #954005 
                    #958601 
Cross-References:   CVE-2015-2925 CVE-2015-6937 CVE-2015-7872
                    CVE-2015-7990 CVE-2015-8539
Affected Products:
                    SUSE Linux Enterprise Live Patching 12
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   An update that solves 5 vulnerabilities and has two fixes
   is now available.

Description:


   This kernel live patch for Linux Kernel 3.12.32-33.1 fixes security issues
   and bugs:

   Security issues fixed:
   - CVE-2015-8539: A negatively instantiated user key could have been used
     by a local user to leverage privileges (bnc#958601).

   - CVE-2015-6937: A NULL pointer dereference flaw was found in the Reliable
     Datagram Sockets (RDS) implementation allowing a local user to cause
     system DoS. A verification was missing that the underlying transport
     exists when a connection was created. (bsc#953052)

   - CVE-2015-7990: RDS: Verify the underlying transport exists before
     creating a connection, preventing possible DoS (bsc#953052).

   - CVE-2015-7872: Possible crash when trying to garbage collect an
     uninstantiated keyring (bsc#951542).

   - CVE-2015-2925: The prepend_path function in fs/dcache.c in the Linux
     kernel did not properly handle rename actions inside a bind mount, which
     allowed local users to bypass an intended container protection mechanism
     by renaming a directory, related to a "double-chroot attack (bnc#951625).

   Non-security bugfix were also done:
   - xfs: Fix lost direct IO write in the last block (bsc#954005).
   - simple fix in kallsyms initialization (bsc#940342 bsc#916225)


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 Live Patching 12:

      zypper in -t patch SUSE-SLE-Live-Patching-12-2016-249=1

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


Package List:

   - SUSE Linux Enterprise Live Patching 12 (x86_64):

      kgraft-patch-3_12_32-33-default-5-2.1
      kgraft-patch-3_12_32-33-xen-5-2.1


References:

   https://www.suse.com/security/cve/CVE-2015-2925.html
   https://www.suse.com/security/cve/CVE-2015-6937.html
   https://www.suse.com/security/cve/CVE-2015-7872.html
   https://www.suse.com/security/cve/CVE-2015-7990.html
   https://www.suse.com/security/cve/CVE-2015-8539.html
   https://bugzilla.suse.com/916225
   https://bugzilla.suse.com/940342
   https://bugzilla.suse.com/951542
   https://bugzilla.suse.com/951625
   https://bugzilla.suse.com/953052
   https://bugzilla.suse.com/954005
   https://bugzilla.suse.com/958601