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Fedora 24 - 2017-b3bdaf58bc Moderate: Xen Privilege Escalation Issues

xen: various flaws (#1463247) blkif responses leak backend stack data [XSA-216] page transfer may allow PV guest to elevate privilege [XSA-217] Races in the grant table unmap code [XSA-218] x86: insufficient reference counts during shadow emulation [XSA-219] x86: PKRU and BND* leakage between vCPU-s [XSA-220] stale P2M mappings due to insufficient error checking [XSA-222] ARM guest. --------------------------------------------------------------------------------Fedora Update Notification FEDORA-2017-b3bdaf58bc 2017-07-01 21:00:30.997417 --------------------------------------------------------------------------------Name : xen Product : Fedora 24 Version : 4.6.5 Release : 7.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: xen: various flaws (#1463247) blkif responses leak backend stack data [XSA-216] page transfer may allow PV guest to elevate privilege [XSA-217] Races in the grant table unmap code [XSA-218] x86: insufficient reference counts during shadow emulation [XSA-219] x86: PKRU and BND* leakage between vCPU-s [XSA-220] stale P2M mappings due to insufficient error checking [XSA-222] ARM guest disabling interrupt may crash Xen [XSA-223] grant table operations mishandle reference counts [XSA-224] arm: vgic: Out-of-bound access when sending SGIs [XSA-225] NULL pointer deref in event channel poll [XSA-221] (#1463231) --------------------------------------------------------------------------------References: [ 1 ] Bug #1458870 - xsa216 xen: blkif responses leak backend stack data (XSA-216) https://bugzilla.redhat.com/show_bug.cgi?id=1458870 [ 2 ] Bug #1458871 - xsa217 xen: page transfer may allow PV guest to elevate privilege (XSA-217) https://bugzilla.redhat.com/show_bug.cgi?id=1458871 [ 3 ] Bug #1458872 - xsa218 xen: Races in the grant table unmap code (XSA-218) https://bugzilla.redhat.com/show_bug.cgi?id=1458872 [ 4 ] Bug #1458873 - xsa219 xen: x86: insufficient reference counts during shadow emulation (XSA-219) https://bugzilla.redhat.com/show_bug.cgi?id=1458873 [ 5 ] Bug #1458874 - xsa220 xen: x86: PKRU and BND* leakage between vCPU-s (XSA-220) https://bugzilla.redhat.com/show_bug.cgi?id=1458874 [ 6 ] Bug #1458876 - xsa222 xen: stale P2M mappings due to insufficient error checking (XSA-222) https://bugzilla.redhat.com/show_bug.cgi?id=1458876 [ 7 ] Bug #1458877 - xsa223 xen: ARM guest disabling interrupt may crash Xen (XSA-223) https://bugzilla.redhat.com/show_bug.cgi?id=1458877 [ 8 ] Bug #1458878 - xsa224 xen: grant table operations mishandle reference counts (XSA-224) https://bugzilla.redhat.com/show_bug.cgi?id=1458878 [ 9 ] Bug #1459515 - xsa225 xen: arm: vgic: Out-of-bound access when sending SGIs (XSA-225) https://bugzilla.redhat.com/show_bug.cgi?id=1459515 [ 10 ] Bug #1458875 - xsa221 xen: NULL pointer deref in event channel poll (XSA-221) https://bugzilla.redhat.com/show_bug.cgi?id=1458875 --------------------------------------------------------------------------------This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade xen' at the command line. For more information, refer to the dnf documentation available at https://dnf.readthedocs.io/en/latest/command_ref.html 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. To unsubscribe send an email This email address is being protected from spambots. You need JavaScript enabled to view it. . The Fedora Project has released a security advisory on vulnerabilities in the Xen hypervisor, urging users to review and apply updates promptly for system security. Fedora Security Update, Xen Flaws, Privilege Escalation Fix, Stack Data Leak, Reference Counting. . Severity: Important. LinuxSecurity.com Team

Jul 02, 2017 •Important Fedora