-------------------------------------------------------------------------------- Fedora Update Notification FEDORA-2020-d46fe34349 2020-10-07 20:44:48.204532 --------------------------------------------------------------------------------
Name : xen Product : Fedora 31 Version : 4.12.3 Release : 5.fc31 URL : http://xen.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 pv: Crash when handling guest access to MSR_MISC_ENABLE [XSA-333, CVE-2020-25602] (#1881619) Missing unlock in XENMEM_acquire_resource error path [XSA-334, CVE-2020-25598] (#1881616) race when migrating timers between x86 HVM vCPU-s [XSA-336, CVE-2020-25604] (#1881618) PCI passthrough code reading back hardware registers [XSA-337, CVE-2020-25595] (#1881587) once valid event channels may not turn invalid [XSA-338, CVE-2020-25597] (#1881588) x86 pv guest kernel DoS via SYSENTER [XSA-339, CVE-2020-25596] (#1881617) Missing memory barriers when accessing/allocating an event channel [XSA-340, CVE-2020-25603] (#1881583) out of bounds event channels available to 32-bit x86 domains [XSA-342, CVE-2020-25600] (#1881582) races with evtchn_reset() [XSA-343, CVE-2020-25599] (#1881581) lack of preemption in evtchn_reset() / evtchn_destroy() [XSA-344, CVE-2020-25601] (#1881586) -------------------------------------------------------------------------------- ChangeLog:
* Tue Sep 22 2020 Michael Young m.a.young@durham.ac.uk - 4.12.3-5 - x86 pv: Crash when handling guest access to MSR_MISC_ENABLE [XSA-333, CVE-2020-25602] (#1881619) - Missing unlock in XENMEM_acquire_resource error path [XSA-334, CVE-2020-25598] (#1881616) - race when migrating timers between x86 HVM vCPU-s [XSA-336, CVE-2020-25604] (#1881618) - PCI passthrough code reading back hardware registers [XSA-337, CVE-2020-25595] (#1881587) - once valid event channels may not turn invalid [XSA-338, CVE-2020-25597] (#1881588) - x86 pv guest kernel DoS via SYSENTER [XSA-339, CVE-2020-25596] (#1881617) - Missing memory barriers when accessing/allocating an event channel [XSA-340, CVE-2020-25603] (#1881583) - out of bounds event channels available to 32-bit x86 domains [XSA-342, CVE-2020-25600] (#1881582) - races with evtchn_reset() [XSA-343, CVE-2020-25599] (#1881581) - lack of preemption in evtchn_reset() / evtchn_destroy() [XSA-344, CVE-2020-25601] (#1881586) -------------------------------------------------------------------------------- References:
[ 1 ] Bug #1877366 - CVE-2020-25603 xen: missing memory barriers when accessing/allocating an event channel (XSA-340) https://bugzilla.redhat.com/show_bug.cgi?id=1877366 [ 2 ] Bug #1877369 - CVE-2020-25595 xen: PCI passthrough code reading back hardware registers (XSA-337) https://bugzilla.redhat.com/show_bug.cgi?id=1877369 [ 3 ] Bug #1877378 - CVE-2020-25601 xen: lack of preemption in evtchn_reset() / evtchn_destroy() (XSA-344) https://bugzilla.redhat.com/show_bug.cgi?id=1877378 [ 4 ] Bug #1877382 - CVE-2020-25604 xen: race when migrating timers between x86 HVM vCPU-s (XSA-336) https://bugzilla.redhat.com/show_bug.cgi?id=1877382 [ 5 ] Bug #1877383 - CVE-2020-25598 xen: missing unlock in XENMEM_acquire_resource error path (XSA-334) https://bugzilla.redhat.com/show_bug.cgi?id=1877383 [ 6 ] Bug #1879553 - CVE-2020-25597 xen: once valid event channels may not turn invalid (XSA-338) https://bugzilla.redhat.com/show_bug.cgi?id=1879553 [ 7 ] Bug #1879567 - CVE-2020-25599 xen: races with evtchn_reset function (XSA-343) https://bugzilla.redhat.com/show_bug.cgi?id=1879567 [ 8 ] Bug #1880137 - CVE-2020-25596 xen: x86 pv guest kernel DoS via SYSENTER (XSA-339) https://bugzilla.redhat.com/show_bug.cgi?id=1880137 [ 9 ] Bug #1880156 - CVE-2020-25600 xen: out of bounds event channels available to 32-bit x86 domains (XSA-342) https://bugzilla.redhat.com/show_bug.cgi?id=1880156 [ 10 ] Bug #1880158 - CVE-2020-25602 xen: x86 pv: Crash when handling guest access to MSR_MISC_ENABLE (XSA-333) https://bugzilla.redhat.com/show_bug.cgi?id=1880158 --------------------------------------------------------------------------------
This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2020-d46fe34349' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label
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