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Fedora 35 FEDORA-2022-a0d7a5eaf2 Moderate Xen Flush And Retbleed

insufficient TLB flush for x86 PV guests in shadow mode [XSA-408, CVE-2022-33745] ---- Retbleed - arbitrary speculative code execution with return instructions [XSA-407, CVE-2022-23816, CVE-2022-23825, CVE-2022-29900]. --------------------------------------------------------------------------------Fedora Update Notification FEDORA-2022-a0d7a5eaf2 2022-08-12 01:41:01.346951 --------------------------------------------------------------------------------Name : xen Product : Fedora 35 Version : 4.15.3 Release : 4.fc35 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: insufficient TLB flush for x86 PV guests in shadow mode [XSA-408, CVE-2022-33745] ---- Retbleed - arbitrary speculative code execution with return instructions [XSA-407, CVE-2022-23816, CVE-2022-23825, CVE-2022-29900] --------------------------------------------------------------------------------ChangeLog: * Tue Jul 26 2022 Michael Young - 4.15.3-4 - insufficient TLB flush for x86 PV guests in shadow mode [XSA-408, CVE-2022-33745] * Fri Jul 22 2022 Michael Young - 4.15.3-3 - Retbleed - arbitrary speculative code execution with return instructions [XSA-407, CVE-2022-23816, CVE-2022-23825, CVE-2022-29900] --------------------------------------------------------------------------------References: [ 1 ] Bug #2112222 - CVE-2022-33745 xen: insufficient TLB flush for x86 PV guests in shadow mode https://bugzilla.redhat.com/show_bug.cgi?id=2112222 --------------------------------------------------------------------------------This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2022-a0d7a5eaf2' at the command line. For more information, refer tothe 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/ --------------------------------------------------------------------------------_______________________________________________ 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./ Do not reply to spam, report it: . The x86 PV guests' inadequate flushing and the Retbleed vulnerability have been tackled in the xen update announcement for Fedora 35.. Fedora Security Advisory, Xen Update, TLB Flush Issue, Retbleed Exploit. . LinuxSecurity.com Team

Aug 11, 2022 Fedora