Security update for xen

SUSE Security Update: Security update for xen
Announcement ID: SUSE-SU-2017:0571-1
Rating: important
References: #1000195 #1002496 #1005028 #1012651 #1014298 #1014300 #1015169 #1016340 #1022871 #1023004 #1024834
Affected Products:
  • SUSE Linux Enterprise Software Development Kit 12-SP2
  • SUSE Linux Enterprise Server 12-SP2
  • SUSE Linux Enterprise Desktop 12-SP2
    		•

    An update that solves four vulnerabilities and has 7 fixes is now available.

    Description:


    This update for xen fixes several issues.

    These security issues were fixed:

    - CVE-2017-2620: In CIRRUS_BLTMODE_MEMSYSSRC mode the bitblit copy routine
    cirrus_bitblt_cputovideo failed to check the memory region, allowing for
    an out-of-bounds write that allows for privilege escalation
    (bsc#1024834).
    - CVE-2017-2615: An error in the bitblt copy operation could have allowed
    a malicious guest administrator to cause an out of bounds memory access,
    possibly leading to information disclosure or privilege escalation
    (bsc#1023004).
    - A malicious guest could have, by frequently rebooting over extended
    periods of time, run the host system out of memory, resulting in a
    Denial of Service (DoS) (bsc#1022871)
    - CVE-2016-9921: The Cirrus CLGD 54xx VGA Emulator support was vulnerable
    to a divide by zero issue while copying VGA data. A privileged user
    inside guest could have used this flaw to crash the process instance on
    the host, resulting in DoS (bsc#1015169

    These non-security issues were fixed:

    - bsc#1000195: Prevent panic on CPU0 while booting on SLES 11 SP3
    - bsc#1002496: Added support for reloading clvm in block-dmmd block-dmmd
    - bsc#1005028: Fixed building Xen RPMs from Sources

    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 Software Development Kit 12-SP2:
      zypper in -t patch SUSE-SLE-SDK-12-SP2-2017-296=1
    • SUSE Linux Enterprise Server 12-SP2:
      zypper in -t patch SUSE-SLE-SERVER-12-SP2-2017-296=1
    • SUSE Linux Enterprise Desktop 12-SP2:
      zypper in -t patch SUSE-SLE-DESKTOP-12-SP2-2017-296=1

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

    Package List:

    • SUSE Linux Enterprise Software Development Kit 12-SP2 (aarch64 x86_64):
      • xen-debugsource-4.7.1_06-31.1
      • xen-devel-4.7.1_06-31.1
    • SUSE Linux Enterprise Server 12-SP2 (x86_64):
      • xen-4.7.1_06-31.1
      • xen-debugsource-4.7.1_06-31.1
      • xen-doc-html-4.7.1_06-31.1
      • xen-libs-32bit-4.7.1_06-31.1
      • xen-libs-4.7.1_06-31.1
      • xen-libs-debuginfo-32bit-4.7.1_06-31.1
      • xen-libs-debuginfo-4.7.1_06-31.1
      • xen-tools-4.7.1_06-31.1
      • xen-tools-debuginfo-4.7.1_06-31.1
      • xen-tools-domU-4.7.1_06-31.1
      • xen-tools-domU-debuginfo-4.7.1_06-31.1
    • SUSE Linux Enterprise Desktop 12-SP2 (x86_64):
      • xen-4.7.1_06-31.1
      • xen-debugsource-4.7.1_06-31.1
      • xen-libs-32bit-4.7.1_06-31.1
      • xen-libs-4.7.1_06-31.1
      • xen-libs-debuginfo-32bit-4.7.1_06-31.1
      • xen-libs-debuginfo-4.7.1_06-31.1

    References: