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Fedora 21: 2015-5208 Security Advisory: Critical Xen Issues Identified

Long latency MMIO mapping operations are not preemptible [XSA-125, CVE-2015-2752] Unmediated PCI command register access in qemu [XSA-126, CVE-2015-2756] Certain domctl operations may be abused to lock up the host [XSA-127, CVE-2015-2751] update to xen-4.4.2. -------------------------------------------------------------------------------- Fedora Update Notification FEDORA-2015-5208 2015-04-01 21:09:13 -------------------------------------------------------------------------------- Name : xen Product : Fedora 21 Version : 4.4.2 Release : 2.fc21 URL : https://xenproject.org/ Summary : Xen is a virtual machine monitor Description : This package contains the XenD daemon and xm command line tools, needed to manage virtual machines running under the Xen hypervisor -------------------------------------------------------------------------------- Update Information: Long latency MMIO mapping operations are not preemptible [XSA-125, CVE-2015-2752] Unmediated PCI command register access in qemu [XSA-126, CVE-2015-2756] Certain domctl operations may be abused to lock up the host [XSA-127, CVE-2015-2751] update to xen-4.4.2 -------------------------------------------------------------------------------- ChangeLog: * Tue Mar 31 2015 Michael Young - 4.4.2-2 - Long latency MMIO mapping operations are not preemptible [XSA-125, CVE-2015-2752] (#1207741) - Unmediated PCI command register access in qemu [XSA-126, CVE-2015-2756] (#1307738) - Certain domctl operations may be abused to lock up the host [XSA-127, CVE-2015-2751] (#1207739) * Mon Mar 23 2015 Michael Young - 4.4.2-1 - update to xen-4.4.2 remove patches for fixes that are now included * Fri Mar 13 2015 Michael Young - 4.4.1-16 - Additional patch for XSA-98 on arm64 * Thu Mar 12 2015 Michael Young - 4.4.1-15 - HVM qemu unexpectedly enabling emulated VGA graphics backends [XSA-119, CVE-2015-2152] (#1201365) * Wed Mar 11 2015 Michael Young - 4.4.1-14 - Hypervisor memory corruption due to x86 emulator flaw[XSA-123, CVE-2015-2151] (#1200398) * Thu Mar 5 2015 Michael Young - 4.4.1-13 - enable building pngs from fig files which is working again - fix oxenstored.service preset preuninstall script - arm: vgic: incorrect rate limiting of guest triggered logging [XSA-118, CVE-2015-1563] (#1187153) - Information leak via internal x86 system device emulation [XSA-121, CVE-2015-2044] - Information leak through version information hypercall [XSA-122, CVE-2015-2045] * Tue Jan 6 2015 Michael Young - 4.4.1-12 - xen crash due to use after free on hvm guest teardown [XSA-116, CVE-2015-0361] (#1179221) * Tue Dec 16 2014 Michael Young - 4.4.1-11 - fix xendomains issue introduced by xl migrate --debug patch * Mon Dec 8 2014 Michael Young - 4.4.1-10 - p2m lock starvation [XSA-114, CVE-2014-9065] - fix build with --without xsm * Thu Nov 27 2014 Michael Young - 4.4.1-9 - Excessive checking in compatibility mode hypercall argument translation [XSA-111, CVE-2014-8866] - Insufficient bounding of "REP MOVS" to MMIO emulated inside the hypervisor [XSA-112, CVE-2014-8867] - fix segfaults and failures in xl migrate --debug (#1166461) * Thu Nov 20 2014 Michael Young - 4.4.1-8 - Guest effectable page reference leak in MMU_MACHPHYS_UPDATE handling [XSA-113, CVE-2014-9030] (#1166914) * Tue Nov 18 2014 Michael Young - 4.4.1-7 - Insufficient restrictions on certain MMU update hypercalls [XSA-109, CVE-2014-8594] (#1165205) - Missing privilege level checks in x86 emulation of far branches [XSA-110, CVE-2014-8595] (#1165204) - Add fix for CVE-2014-0150 to qemu-dm, though it probably isn't exploitable from xen (#1086776) -------------------------------------------------------------------------------- References: [ 1 ] Bug #1203732 - CVE-2015-2752 xen: long latency MMIO mapping operations are not preemptible (xsa125) https://bugzilla.redhat.com/show_bug.cgi?id=1203732 [ 2 ] Bug #1203737 - CVE-2015-2756 xen: unmediated PCI command register access in qemu (xsa126) https://bugzilla.redhat.com/show_bug.cgi?id=1203737 [ 3 ] Bug #1203745 - CVE-2015-2751 xen: certain domctl operations may be abused to lock up the host https://bugzilla.redhat.com/show_bug.cgi?id=1203745 -------------------------------------------------------------------------------- This update can be installed with the "yum" update program. Use su -c 'yum update xen' at the command line. For more information, refer to "Managing Software with yum", available at . All packages are signed with the Fedora Project GPG key. More details on the GPG keys used by the Fedora Project can be found at https://fedoraproject.org/security/ -------------------------------------------------------------------------------- _______________________________________________ package-announce mailing list This email address is being protected from spambots. You need JavaScript enabled to view it. https://lists.fedoraproject.org/admin/lists/package-announce.lists.fedoraproject.org/ . The latest Xen security patch for Fedora 21 resolves several vulnerabilities, boosting overall system performance and refining hypervisor control.. Xen Security Update,Fedora 21,xen Hypervisor,Improving Management,Virtual Machines. . Severity: Critical. LinuxSecurity.com Team

Apr 11, 2015 •Critical Fedora