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Fedora Update Notification
FEDORA-2019-865bb16900
2019-11-17 01:42:46.113707
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Name        : xen
Product     : Fedora 29
Version     : 4.11.2
Release     : 2.fc29
URL         : https://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

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Update Information:

VCPUOP_initialise DoS [XSA-296, CVE-2019-18420] missing descriptor table limit
checking in x86 PV emulation [XSA-298, CVE-2019-18425] Issues with restartable
PV type change operations [XSA-299, CVE-2019-18421] (#1767726) add-to-physmap
can be abused to DoS Arm hosts [XSA-301, CVE-2019-18423] passed through PCI
devices may corrupt host memory after deassignment [XSA-302, CVE-2019-18424]
(#1767731) ARM: Interrupts are unconditionally unmasked in exception handlers
[XSA-303, CVE-2019-18422]
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ChangeLog:

* Fri Nov  1 2019 Michael Young  - 4.11.2-2
- VCPUOP_initialise DoS [XSA-296, CVE-2019-18420]
- missing descriptor table limit checking in x86 PV emulation [XSA-298,
        CVE-2019-18425]
- Issues with restartable PV type change operations [XSA-299, CVE-2019-18421]
        (#1767726)
- add-to-physmap can be abused to DoS Arm hosts [XSA-301, CVE-2019-18423]
- passed through PCI devices may corrupt host memory after deassignment
        [XSA-302, CVE-2019-18424] (#1767731)
- ARM: Interrupts are unconditionally unmasked in exception handlers
        [XSA-303, CVE-2019-18422]
* Mon Jul  1 2019 Michael Young  - 4.11.2-1
- update to 4.11.2
  remove patches now fixed upstream
  adjust xen.use.fedora.ipxe.patch
  drop parts of xen.gcc9.fixes.patch
* Sat Jun 15 2019 Michael Young  - 4.11.1-6
- Unlimited Arm Atomics Operations [XSA-295] (#1720760)
* Tue May 14 2019 Michael Young  - 4.11.1-5
- Microarchitectural Data Sampling speculative side channel [XSA-297,
	CVE-2018-12126, CVE-2018-12127, CVE-2018-12130, CVE-2019-11091]
- additional patches so above applies cleanly
- work around grub2 issues in dom0
* Tue Mar  5 2019 Michael Young  - 4.11.1-4
- xen: various flaws (#1685577)
  grant table transfer issues on large hosts [XSA-284]
  race with pass-through device hotplug [XSA-285]
  x86: steal_page violates page_struct access discipline [XSA-287]
  x86: Inconsistent PV IOMMU discipline [XSA-288]
  missing preemption in x86 PV page table unvalidation [XSA-290]
  x86/PV: page type reference counting issue with failed IOMMU update [XSA-291]
  x86: insufficient TLB flushing when using PCID [XSA-292]
  x86: PV kernel context switch corruption [XSA-293]
  x86 shadow: Insufficient TLB flushing when using PCID [XSA-294]
* Thu Feb 14 2019 Michael Young  - 4.11.1-3
- add gcc9 build fixes (#1676229)
* Sun Feb  3 2019 Fedora Release Engineering  - 4.11.1-2
- Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild
* Tue Dec 11 2018 Michael Young  - 4.11.1-1
- update to 4.11.1
  remove patches for issues now fixed upstream
  adjust xen.use.fedora.ipxe.patch
- only include qemutrad build requirements for platforms that use it
- construct ovmf.bin from edk2-ovmf package (#1656651)
* Tue Nov 20 2018 Michael Young  - 4.11.0-10
- insufficient TLB flushing / improper large page mappings with AMD IOMMUs
	[XSA-275, CVE-2018-19961, CVE-2018-19962] (#1651665)
- x86: DoS from attempting to use INVPCID with a non-canonical addresses
	[XSA-279, CVE-2018-19965] (#1651970)
- xen: various flaws (#1652251)
  resource accounting issues in x86 IOREQ server handling
	[XSA-276, CVE-2018-19963]
  x86: incorrect error handling for guest p2m page removals
	[XSA-277, CVE-2018-19964]
  Fix for XSA-240 conflicts with shadow paging [XSA-280, CVE-2018-19966]
* Tue Nov  6 2018 Michael Young  - 4.11.0-9
- guest use of HLE constructs may lock up host [XSA-282, CVE-2018-19967]
* Wed Oct 24 2018 Michael Young  - 4.11.0-8
- x86: Nested VT-x usable even when disabled [XSA-278, CVE-2018-18883]
	(#1643118)
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References:

  [ 1 ] Bug #1765043 - CVE-2019-18421 xen: a malicious PV guest administrator may be able to escalate their privilege to that of the host
        https://bugzilla.redhat.com/show_bug.cgi?id=1765043
  [ 2 ] Bug #1767730 - CVE-2019-18424 xen: passed through PCI devices may corrupt host memory after deassignment leading to privilege escalation
        https://bugzilla.redhat.com/show_bug.cgi?id=1767730
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This update can be installed with the "dnf" update program. Use
su -c 'dnf upgrade --advisory FEDORA-2019-865bb16900' at the command
line. For more information, refer to the dnf documentation available at
https://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label

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/keys
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