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Fedora 24: 2016-9-13 Moderate: Xen Flaws and Misconfigurations

x86: Disallow L3 recursive pagetable for 32-bit PV guests [XSA-185, CVE-2016-7092] (#1374470) x86: Mishandling of instruction pointer truncation during emulation [XSA-186, CVE-2016-7093] (#1374471) x86 HVM: Overflow of sh_ctxt-> seg_reg[] [XSA-187, CVE-2016-7094] (#1374473). -------------------------------------------------------------------------------- Fedora Update Notification FEDORA-2016-7d2c67d1f5 2016-09-13 17:56:34.781586 -------------------------------------------------------------------------------- Name : xen Product : Fedora 24 Version : 4.6.3 Release : 5.fc24 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: x86: Disallow L3 recursive pagetable for 32-bit PV guests [XSA-185, CVE-2016-7092] (#1374470) x86: Mishandling of instruction pointer truncation during emulation [XSA-186, CVE-2016-7093] (#1374471) x86 HVM: Overflow of sh_ctxt-> seg_reg[] [XSA-187, CVE-2016-7094] (#1374473) -------------------------------------------------------------------------------- References: [ 1 ] Bug #1370319 - CVE-2016-7092 xen: x86: Disallow L3 recursive pagetable for 32-bit PV guests https://bugzilla.redhat.com/show_bug.cgi?id=1370319 [ 2 ] Bug #1370322 - CVE-2016-7093 xen: x86: Mishandling of instruction pointer truncation during emulation https://bugzilla.redhat.com/show_bug.cgi?id=1370322 [ 3 ] Bug #1370332 - CVE-2016-7094 xen: x86 HVM: Overflow of sh_ctxt-> seg_reg[] https://bugzilla.redhat.com/show_bug.cgi?id=1370332 -------------------------------------------------------------------------------- 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 . Allpackages 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/This email address is being protected from spambots. You need JavaScript enabled to view it./ . Xen updates for Fedora 24 implement restrictions on L3 nesting, correct truncation of instruction pointers, and resolve overflow vulnerabilities.. Xen Security Update,Fedora 24,Instruction Pointer Fix,Virtual Machine Security. . Severity: Important. LinuxSecurity.com Team

Sep 13, 2016 •Important Fedora