Security update for xen

SUSE Security Update: Security update for xen
Announcement ID: SUSE-SU-2022:4051-1
Rating: important
References: #1185104 #1203806 #1203807 #1204482 #1204485 #1204487 #1204489 #1204490 #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
Affected Products:
  • SUSE Linux Enterprise Server 12-SP2-BCL

An update that fixes 17 vulnerabilities is now available.


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 Security 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:
    zypper in -t patch SUSE-SLE-SERVER-12-SP2-BCL-2022-4051=1

Package List:

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