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Fedora 31: FEDORA-2020-295ed0b1e0 Critical: Xen Memory Barriers Issues

multiple xenoprof issues [XSA-313, CVE-2020-11740, CVE-2020-11741] (#1823912, #1823914) Missing memory barriers in read-write unlock paths [XSA-314, CVE-2020-11739] (#1823784) Bad error path in GNTTABOP_map_grant [XSA-316, CVE-2020-11743] (#1823926) Bad continuation handling in GNTTABOP_copy [XSA-318, CVE-2020-11742] (#1823943). --------------------------------------------------------------------------------Fedora Update Notification FEDORA-2020-295ed0b1e0 2020-05-01 03:48:17.298406 --------------------------------------------------------------------------------Name : xen Product : Fedora 31 Version : 4.12.2 Release : 3.fc31 URL : https://xenproject.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: multiple xenoprof issues [XSA-313, CVE-2020-11740, CVE-2020-11741] (#1823912, #1823914) Missing memory barriers in read-write unlock paths [XSA-314, CVE-2020-11739] (#1823784) Bad error path in GNTTABOP_map_grant [XSA-316, CVE-2020-11743] (#1823926) Bad continuation handling in GNTTABOP_copy [XSA-318, CVE-2020-11742] (#1823943) --------------------------------------------------------------------------------ChangeLog: * Wed Apr 15 2020 Michael Young - 4.12.2-3 - multiple xenoprof issues [XSA-313, CVE-2020-11740, CVE-2020-11741] (#1823912, #1823914) - Missing memory barriers in read-write unlock paths [XSA-314, CVE-2020-11739] (#1823784) - Bad error path in GNTTABOP_map_grant [XSA-316, CVE-2020-11743] (#1823926) - Bad continuation handling in GNTTABOP_copy [XSA-318, CVE-2020-11742] (#1823943) --------------------------------------------------------------------------------References: [ 1 ] Bug #1823783 - CVE-2020-11739 xen: missing memory barriers in read-write unlock paths (XSA-314) https://bugzilla.redhat.com/show_bug.cgi?id=1823783 [ 2 ] Bug #1823911 - CVE-2020-11740 xen: xenoprof issue allows guest OS users without active profiling to obtain sensitive information about other guests (XSA-313) https://bugzilla.redhat.com/show_bug.cgi?id=1823911 [ 3 ] Bug #1823913 - CVE-2020-11741 xen: xenoprof issue allows guest OS users with active profiling to obtain sensitive information about other guests (XSA-313) https://bugzilla.redhat.com/show_bug.cgi?id=1823913 [ 4 ] Bug #1823925 - CVE-2020-11743 xen: bad error path in GNTTABOP_map_grant (XSA-316) https://bugzilla.redhat.com/show_bug.cgi?id=1823925 [ 5 ] Bug #1823942 - CVE-2020-11742 xen: bad continuation handling in GNTTABOP_copy (XSA-318) https://bugzilla.redhat.com/show_bug.cgi?id=1823942 --------------------------------------------------------------------------------This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2020-295ed0b1e0' 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 --------------------------------------------------------------------------------_______________________________________________ package-announce mailing list -- This email address is being protected from spambots. You need JavaScript enabled to view it. To unsubscribe send an email to This email address is being protected from spambots. You need JavaScript enabled to view it. Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/This email address is being protected from spambots. You need JavaScript enabled to view it./ . Xen upgrade resolves significant concerns in Fedora 31, introducing security enhancements for various vulnerabilities and memory safeguards.. Fedora Update, Xen Hypervisor, Memory Barriers, Xenoprof Issues. .Severity: Critical. LinuxSecurity.com Team

Apr 30, 2020 •Critical Fedora