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Fedora 34: FEDORA-2022-0cc3916e08 Critical: Xen DoS Issues

fedora
Calendar Grey February 18, 2022
Dist Fedora Esm H88
The latest patch for Xen on Fedora 34 tackles critical security concerns such as Denial of Service (DoS) vulnerabilities and the need for better IRQ cleanup procedures.
update to xen-4.14.4 ---- frontends vulnerable to backends [XSA-376] (document change only) arm: guest_physmap_remove_page not removing the p2m mappings [XSA-393, CVE-2022-23033] (...

Summary

This package contains the XenD daemon and xm command line

tools, needed to manage virtual machines running under the

Xen hypervisor

update to xen-4.14.4 ---- frontends vulnerable to backends [XSA-376] (document

change only) arm: guest_physmap_remove_page not removing the p2m mappings

[XSA-393, CVE-2022-23033] (#2045044) A PV guest could DoS Xen while unmapping a

grant [XSA-394, CVE-2022-23034] (#2045042) Insufficient cleanup of passed-through device IRQs [XSA-395, CVE-2022-23035] (#2045040)

* Thu Feb 3 2022 Michael Young - 4.14.4-1

- update to xen-4.14.4

remove or adjust patches now included or superceded upstream

* Tue Jan 25 2022 Michael Young - 4.14.3-4

- frontends vulnerable to backends [XSA-376] (document change only)

- arm: guest_physmap_remove_page not removing the p2m mappings [XSA-393,

CVE-2022-23033] (#2045044)

- A PV guest could DoS Xen while unmapping a grant [XSA-394, CVE-2022-23034]

(#2045042)

- Insufficient cleanup of passed-through device IRQs [XSA-395,

CVE-2022-23035] (#2045040)

[ 1 ] Bug #2045039 - CVE-2022-23035 xen: Insufficient cleanup of passed-through device IRQs (XSA-395)

https://bugzilla.redhat.com/show_bug.cgi?id=2045039

[ 2 ] Bug #2045041 - CVE-2022-23034 xen: A PV guest could DoS Xen while unmapping a grant (XSA-394)

https://bugzilla.redhat.com/show_bug.cgi?id=2045041

[ 3 ] Bug #2045043 - CVE-2022-23033 xen: arm: guest_physmap_remove_page not removing the p2m mappings (XSA-393)

https://bugzilla.redhat.com/show_bug.cgi?id=2045043

su -c 'dnf upgrade --advisory FEDORA-2022-0cc3916e08' 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/

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Change Log

References

Update Instructions

Severity
critical
Lowest
Low
Medium
High
Critical

Product: Fedora 34
Version: 4.14.4
Release: 1.fc34
Summary: Xen is a virtual machine monitor

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