-------------------------------------------------------------------------------- Fedora Update Notification FEDORA-2021-081f9bf5d2 2021-09-24 20:04:10.606743 --------------------------------------------------------------------------------
Name : xen Product : Fedora 35 Version : 4.15.0 Release : 6.fc35 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:
IOMMU page mapping issues on x86 [XSA-378, CVE-2021-28694, CVE-2021-28695, CVE-2021-28696] (#1997531) (#1997568) (#1997537) grant table v2 status pages may remain accessible after de-allocation [XSA-379, CVE-2021-28697] (#1997520) long running loops in grant table handling [XSA-380, CVE-2021-28698] (#1997526) inadequate grant-v2 status frames array bounds check [XSA-382, CVE-2021-28699] (#1997523) xen/arm: No memory limit for dom0less domUs [XSA-383, CVE-2021-28700] (#1997527) -------------------------------------------------------------------------------- ChangeLog:
* Wed Aug 25 2021 Michael Young m.a.young@durham.ac.uk - 4.15.0-6 - IOMMU page mapping issues on x86 [XSA-378, CVE-2021-28694, CVE-2021-28695, CVE-2021-28696] (#1997531) (#1997568) (#1997537) - grant table v2 status pages may remain accessible after de-allocation [XSA-379, CVE-2021-28697] (#1997520) - long running loops in grant table handling [XSA-380, CVE-2021-28698] (#1997526) - inadequate grant-v2 status frames array bounds check [XSA-382, CVE-2021-28699] (#1997523) - xen/arm: No memory limit for dom0less domUs [XSA-383, CVE-2021-28700] (#1997527) - grub x86_64-efi modules now go into /boot/grub2 -------------------------------------------------------------------------------- References:
[ 1 ] Bug #1997519 - CVE-2021-28697 xen: malicious guest may be able to elevate its privileges leads to DoS https://bugzilla.redhat.com/show_bug.cgi?id=1997519 [ 2 ] Bug #1997522 - CVE-2021-28699 xen: malicious guest kernel leads to DoS https://bugzilla.redhat.com/show_bug.cgi?id=1997522 [ 3 ] Bug #1997524 - CVE-2021-28698 xen: malicious kernels lead to DoS https://bugzilla.redhat.com/show_bug.cgi?id=1997524 [ 4 ] Bug #1997525 - CVE-2021-28700 xen: malicious dom0less guest could drive Xen out of memory and leads to DoS https://bugzilla.redhat.com/show_bug.cgi?id=1997525 [ 5 ] Bug #1997529 - CVE-2021-28694 xen: failed to prevent guests from undoing/replacing such mappings https://bugzilla.redhat.com/show_bug.cgi?id=1997529 [ 6 ] Bug #1997535 - CVE-2021-28696 xen: physical device from a guest allowing to access memory https://bugzilla.redhat.com/show_bug.cgi?id=1997535 [ 7 ] Bug #1997567 - CVE-2021-28695 xen: discontinuous range is specified by firmware leads to vulnerability https://bugzilla.redhat.com/show_bug.cgi?id=1997567 --------------------------------------------------------------------------------
This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2021-081f9bf5d2' 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
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 --------------------------------------------------------------------------------