SUSE-SU-2022:3728-1

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SUSE-SU-2022:3728-1

Summary: Security update for xen

Details: This update for xen fixes the following issues: - CVE-2022-26365: Fixed issue where Linux Block and Network PV device frontends don't zero memory regions before sharing them with the backend (bsc#1200762). - CVE-2022-33740: Fixed issue where Linux Block and Network PV device frontends don't zero memory regions before sharing them with the backend (bsc#1200762). - CVE-2022-33741: Fixed issue where data residing in the same 4K page as data shared with a backend was being accessible by such backend (bsc#1200762). - CVE-2022-33742: Fixed issue where data residing in the same 4K page as data shared with a backend was being accessible by such backend (bsc#1200762). - CVE-2022-33746: Fixed DoS due to excessively long P2M pool freeing (bsc#1203806). - CVE-2021-28689: Fixed speculative vulnerabilities with bare (non-shim) 32-bit PV guests (bsc#1185104). - CVE-2022-33748: Fixed DoS due to race in locking (bsc#1203807).

References: https://www.suse.com/support/update/announcement/2022/suse-su-20223728-1/, https://bugzilla.suse.com/1185104, https://bugzilla.suse.com/1200762, https://bugzilla.suse.com/1203806, https://bugzilla.suse.com/1203807, https://www.suse.com/security/cve/CVE-2021-28689, https://www.suse.com/security/cve/CVE-2022-26365, https://www.suse.com/security/cve/CVE-2022-33740, https://www.suse.com/security/cve/CVE-2022-33741, https://www.suse.com/security/cve/CVE-2022-33742, https://www.suse.com/security/cve/CVE-2022-33746, https://www.suse.com/security/cve/CVE-2022-33748