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SUSE: 2022:3665-1 Important: Xen DoS Fixes and Patch Update

suse
Calendar Grey October 19, 2022
Dist Suse Esm H88
SUSE-SU-2023:1456-1 crucial upgrade for xen addresses 7 security vulnerabilities, reinforcing system security.
An update that solves 8 vulnerabilities and has one errata is now available

Summary

This update for xen fixes the following issues: - CVE-2022-33746: Fixed DoS due to excessively long P2M pool freeing (bsc#1203806). - CVE-2022-33748: Fixed DoS due to race in locking (bsc#1203807). - 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).

Topics%20covered

Topics Covered

security advisory update DoS patch management system integrity SUSE Linux xen

References

#1027519 #1167608 #1185104 #1197081 #1200762

#1201394 #1201631 #1203806 #1203807

Cross- CVE-2021-28689 CVE-2022-26365 CVE-2022-33740

CVE-2022-33741 CVE-2022-33742 CVE-2022-33745

CVE-2022-33746 CVE-2022-33748

CVSS scores:

CVE-2021-28689 (NVD) : 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CVE-2021-28689 (SUSE): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CVE-2022-26365 (NVD) : 7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

CVE-2022-26365 (SUSE): 6.6 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H

CVE-2022-33740 (NVD) : 7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

CVE-2022-33740 (SUSE): 6.6 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H

CVE-2022-33741 (NVD) : 7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2022:3665-1
Rating: important

Topics%20covered

Topics Covered

security advisory update DoS patch management system integrity SUSE Linux xen

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