Security update for xen

Announcement ID:	SUSE-SU-2022:4051-1
Rating:	important
References:	bsc#1185104 bsc#1203806 bsc#1203807 bsc#1204482 bsc#1204485 bsc#1204487 bsc#1204489 bsc#1204490 bsc#1204494
Cross-References:	CVE-2021-28689 CVE-2022-33746 CVE-2022-33748 CVE-2022-42309 CVE-2022-42310 CVE-2022-42311 CVE-2022-42312 CVE-2022-42313 CVE-2022-42314 CVE-2022-42315 CVE-2022-42316 CVE-2022-42317 CVE-2022-42318 CVE-2022-42320 CVE-2022-42321 CVE-2022-42322 CVE-2022-42323
CVSS scores:	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-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-2022-33746 ( SUSE ): 5.3 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:N/A:H CVE-2022-33746 ( NVD ): 6.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H CVE-2022-33748 ( SUSE ): 5.3 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:N/A:H CVE-2022-33748 ( NVD ): 5.6 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H CVE-2022-42309 ( SUSE ): 7.5 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H CVE-2022-42309 ( NVD ): 8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H CVE-2022-42310 ( SUSE ): 6.0 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H CVE-2022-42310 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2022-42311 ( SUSE ): 6.0 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H CVE-2022-42311 ( NVD ): 6.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H CVE-2022-42312 ( SUSE ): 6.0 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H CVE-2022-42312 ( NVD ): 6.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H CVE-2022-42313 ( SUSE ): 6.0 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H CVE-2022-42313 ( NVD ): 6.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H CVE-2022-42314 ( SUSE ): 6.0 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H CVE-2022-42314 ( NVD ): 6.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H CVE-2022-42315 ( SUSE ): 6.0 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H CVE-2022-42315 ( NVD ): 6.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H CVE-2022-42316 ( SUSE ): 6.0 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H CVE-2022-42316 ( NVD ): 6.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H CVE-2022-42317 ( SUSE ): 6.0 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H CVE-2022-42317 ( NVD ): 6.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H CVE-2022-42318 ( SUSE ): 6.0 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H CVE-2022-42318 ( NVD ): 6.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H CVE-2022-42320 ( SUSE ): 7.5 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H CVE-2022-42320 ( NVD ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2022-42321 ( SUSE ): 6.0 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H CVE-2022-42321 ( NVD ): 6.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H CVE-2022-42322 ( SUSE ): 5.3 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:N/A:H CVE-2022-42322 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2022-42323 ( SUSE ): 5.3 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:N/A:H CVE-2022-42323 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected Products:	SUSE Linux Enterprise High Performance Computing 12 SP2 SUSE Linux Enterprise Server 12 SP2 SUSE Linux Enterprise Server 12 SP2 BCL 12-SP2

An update that solves 17 vulnerabilities can now be installed.

Description:

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-2021-28689: Fixed speculative vulnerabilities with bare (non-shim) 32-bit PV guests (bsc#1185104).
• CVE-2022-42311, CVE-2022-42312, CVE-2022-42313, CVE-2022-42314, CVE-2022-42315, CVE-2022-42316, CVE-2022-42317, CVE-2022-42318: xen: Xenstore: Guests can let xenstored run out of memory (bsc#1204482)
• CVE-2022-42309: xen: Xenstore: Guests can crash xenstored (bsc#1204485)
• CVE-2022-42310: xen: Xenstore: Guests can create orphaned Xenstore nodes (bsc#1204487)
• CVE-2022-42320: xen: Xenstore: Guests can get access to Xenstore nodes of deleted domains (bsc#1204489)
• CVE-2022-42321: xen: Xenstore: Guests can crash xenstored via exhausting the stack (bsc#1204490)
• CVE-2022-42322,CVE-2022-42323: xen: Xenstore: cooperating guests can create arbitrary numbers of nodes (bsc#1204494)

Special Instructions and Notes:

• Please reboot the system after installing this update.

Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Alternatively you can run the command listed for your product:

• SUSE Linux Enterprise Server 12 SP2 BCL 12-SP2
  zypper in -t patch SUSE-SLE-SERVER-12-SP2-BCL-2022-4051=1

Package List:

• SUSE Linux Enterprise Server 12 SP2 BCL 12-SP2 (x86_64)
  • xen-tools-4.7.6_28-43.98.1
  • xen-tools-domU-debuginfo-4.7.6_28-43.98.1
  • xen-libs-debuginfo-4.7.6_28-43.98.1
  • xen-libs-debuginfo-32bit-4.7.6_28-43.98.1
  • xen-4.7.6_28-43.98.1
  • xen-libs-32bit-4.7.6_28-43.98.1
  • xen-doc-html-4.7.6_28-43.98.1
  • xen-tools-debuginfo-4.7.6_28-43.98.1
  • xen-libs-4.7.6_28-43.98.1
  • xen-tools-domU-4.7.6_28-43.98.1
  • xen-debugsource-4.7.6_28-43.98.1

References:

• https://www.suse.com/security/cve/CVE-2021-28689.html
• https://www.suse.com/security/cve/CVE-2022-33746.html
• https://www.suse.com/security/cve/CVE-2022-33748.html
• https://www.suse.com/security/cve/CVE-2022-42309.html
• https://www.suse.com/security/cve/CVE-2022-42310.html
• https://www.suse.com/security/cve/CVE-2022-42311.html
• https://www.suse.com/security/cve/CVE-2022-42312.html
• https://www.suse.com/security/cve/CVE-2022-42313.html
• https://www.suse.com/security/cve/CVE-2022-42314.html
• https://www.suse.com/security/cve/CVE-2022-42315.html
• https://www.suse.com/security/cve/CVE-2022-42316.html
• https://www.suse.com/security/cve/CVE-2022-42317.html
• https://www.suse.com/security/cve/CVE-2022-42318.html
• https://www.suse.com/security/cve/CVE-2022-42320.html
• https://www.suse.com/security/cve/CVE-2022-42321.html
• https://www.suse.com/security/cve/CVE-2022-42322.html
• https://www.suse.com/security/cve/CVE-2022-42323.html
• https://bugzilla.suse.com/show_bug.cgi?id=1185104
• https://bugzilla.suse.com/show_bug.cgi?id=1203806
• https://bugzilla.suse.com/show_bug.cgi?id=1203807
• https://bugzilla.suse.com/show_bug.cgi?id=1204482
• https://bugzilla.suse.com/show_bug.cgi?id=1204485
• https://bugzilla.suse.com/show_bug.cgi?id=1204487
• https://bugzilla.suse.com/show_bug.cgi?id=1204489
• https://bugzilla.suse.com/show_bug.cgi?id=1204490
• https://bugzilla.suse.com/show_bug.cgi?id=1204494