------------------------------------------------------------------------------- - Fedora Update Notification FEDORA-2018-1a467757ce 2018-07-13 16:33:58.543271 ------------------------------------------------------------------------------- -
Name : xen Product : Fedora 27 Version : 4.9.2 Release : 6.fc27 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:
preemption checks bypassed in x86 PV MM handling [XSA-264, CVE-2018-12891] x86: #DB exception safety check can be triggered by a guest [XSA-265, CVE-2018-12893] libxl fails to honour readonly flag on HVM emulated SCSI disks [XSA-266, CVE-2018-12892] ---- Speculative register leakage from lazy FPU context switching [XSA-267, CVE-2018-3665] fix for change in iasl output ------------------------------------------------------------------------------- - ChangeLog:
* Wed Jun 27 2018 Michael Young <m.a.young@durham.ac.uk> - 4.9.2-6 - preemption checks bypassed in x86 PV MM handling [XSA-264, CVE-2018-12891] - x86: #DB exception safety check can be triggered by a guest [XSA-265, CVE-2018-12893] - libxl fails to honour readonly flag on HVM emulated SCSI disks [XSA-266, CVE-2018-12892] * Sat Jun 16 2018 Michael Young <m.a.young@durham.ac.uk> - 4.9.2-5 - Speculative register leakage from lazy FPU context switching [XSA-267, CVE-2018-3665] - fix for change in iasl output * Tue May 22 2018 Michael Young <m.a.young@durham.ac.uk> - 4.9.2-4 - Speculative Store Bypass [XSA-263, CVE-2018-3639] (with extra patches so it applies cleanly) * Wed May 9 2018 Michael Young <m.a.young@durham.ac.uk> - 4.9.2-3 - x86: mishandling of debug exceptions [XSA-260, CVE-2018-8897] (with extra patch so it applies cleanly) - x86 vHPET interrupt injection errors [XSA-261, CVE-2018-10982] (#1576089) - qemu may drive Xen into unbounded loop [XSA-262, CVE-2018-10981] (#1576680) * Wed Apr 25 2018 Michael Young <m.a.young@durham.ac.uk> - 4.9.2-2 - Information leak via crafted user-supplied CDROM [XSA-258] (#1571867) - x86: PV guest may crash Xen with XPTI [XSA-259] (#1571878) * Wed Apr 4 2018 Michael Young <m.a.young@durham.ac.uk> - 4.9.2-1 - update to 4.9.2 adjust xen.use.fedora.ipxe.patch remove patches for issues now fixed upstream * Tue Feb 27 2018 Michael Young <m.a.young@durham.ac.uk> - 4.9.1-5 - add Xen page-table isolation (XPTI) mitigation and Branch Target Injection (BTI) mitigation for XSA-254 - DoS via non-preemptable L3/L4 pagetable freeing [XSA-252, CVE-2018-7540] (#1549568) - grant table v2 -> v1 transition may crash Xen [XSA-255, CVE-2018-7541] (#1549570) - x86 PVH guest without LAPIC may DoS the host [XSA-256, CVE-2018-7542] (#1549572) * Tue Dec 12 2017 Michael Young <m.a.young@durham.ac.uk> - 4.9.1-4 - another patch related to the [XSA-240, CVE-2017-15595] issue - xen: various flaws (#1525018) x86 PV guests may gain access to internally used page [XSA-248, CVE-2017-17566] broken x86 shadow mode refcount overflow check [XSA-249, CVE-2017-17563] improper x86 shadow mode refcount error handling [XSA-250, CVE-2017-17564] improper bug check in x86 log-dirty handling [XSA-251, CVE-2017-17565] * Sat Dec 2 2017 Richard W.M. Jones <rjones@redhat.com> - 4.9.1-3 - OCaml 4.06.0 rebuild. * Tue Nov 28 2017 Michael Young <m.a.young@durham.ac.uk> - 4.9.1-2 - xen: various flaws (#1518214) x86: infinite loop due to missing PoD error checking [XSA-246, CVE-2017-17044] Missing p2m error checking in PoD code [XSA-247, CVE-2017-17045] * Thu Nov 23 2017 Michael Young <m.a.young@durham.ac.uk> - 4.9.1-1 - update to 4.9.1 (#1515818) adjust xen.use.fedora.ipxe.patch and qemu.git-fec5e8c92becad223df9d972770522f64aafdb72.patch remove patches for issues now fixed upstream and parts of xen.gcc7.fix.patch update xen.hypervisor.config - update Source0 location * Wed Nov 15 2017 Michael Young <m.a.young@durham.ac.uk> - 4.9.0-14 - fix an issue in patch for [XSA-240, CVE-2017-15595] that might be a security issue - fix for [XSA-243, CVE-2017-15592] could cause hypervisor crash (DOS) * Thu Oct 26 2017 Michael Young <m.a.young@durham.ac.uk> - 4.9.0-13 - pin count / page reference race in grant table code [XSA-236, CVE-2017-15597] (#1506693) * Thu Oct 12 2017 Michael Young <m.a.young@durham.ac.uk> - 4.9.0-12 - xen: various flaws (#1501391) multiple MSI mapping issues on x86 [XSA-237, CVE-2017-15590] DMOP map/unmap missing argument checks [XSA-238, CVE-2017-15591] hypervisor stack leak in x86 I/O intercept code [XSA-239, CVE-2017-15589] Unlimited recursion in linear pagetable de-typing [XSA-240, CVE-2017-15595] Stale TLB entry due to page type release race [XSA-241, CVE-2017-15588] page type reference leak on x86 [XSA-242, CVE-2017-15593] x86: Incorrect handling of self-linear shadow mappings with translated guests [XSA-243, CVE-2017-15592] x86: Incorrect handling of IST settings during CPU hotplug [XSA-244, CVE-2017-15594] ------------------------------------------------------------------------------- - References:
[ 1 ] Bug #1590984 - CVE-2018-12892 xsa-266 xen: libxl fails to honour readonly flag on HVM emulated SCSI disks https://bugzilla.redhat.com/show_bug.cgi?id=1590984 [ 2 ] Bug #1590979 - CVE-2018-12893 xen: x86 DB exception safety check can be triggered by a guest (XSA-265) https://bugzilla.redhat.com/show_bug.cgi?id=1590979 [ 3 ] Bug #1590985 - CVE-2018-12891 xen: preemption checks bypassed in x86 PV MM handling (XSA-264) https://bugzilla.redhat.com/show_bug.cgi?id=1590985 ------------------------------------------------------------------------------- -
This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2018-1a467757ce' 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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