SUSE Security Update: Security update for xen
______________________________________________________________________________

Announcement ID:    SUSE-SU-2022:1375-1
Rating:             important
References:         #1182846 #1196915 #1197423 #1197425 #1197426 
                    
Cross-References:   CVE-2021-20257 CVE-2021-26401 CVE-2022-0001
                    CVE-2022-0002 CVE-2022-26356 CVE-2022-26357
                    CVE-2022-26358 CVE-2022-26359 CVE-2022-26360
                    CVE-2022-26361
CVSS scores:
                    CVE-2021-20257 (NVD) : 6.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
                    CVE-2021-20257 (SUSE): 3.2 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:L
                    CVE-2021-26401 (NVD) : 5.6 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
                    CVE-2021-26401 (SUSE): 5.6 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
                    CVE-2022-0001 (NVD) : 6.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
                    CVE-2022-0001 (SUSE): 5.6 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
                    CVE-2022-0002 (NVD) : 6.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
                    CVE-2022-0002 (SUSE): 5.6 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
                    CVE-2022-26356 (NVD) : 5.6 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H
                    CVE-2022-26356 (SUSE): 6.7 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H
                    CVE-2022-26357 (NVD) : 7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
                    CVE-2022-26357 (SUSE): 5.7 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:H
                    CVE-2022-26358 (NVD) : 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
                    CVE-2022-26358 (SUSE): 5.7 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:H
                    CVE-2022-26359 (NVD) : 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
                    CVE-2022-26359 (SUSE): 5.7 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:H
                    CVE-2022-26360 (NVD) : 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
                    CVE-2022-26360 (SUSE): 5.7 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:H
                    CVE-2022-26361 (NVD) : 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
                    CVE-2022-26361 (SUSE): 5.7 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:H

Affected Products:
                    SUSE Linux Enterprise Server 12-SP2-BCL
______________________________________________________________________________

   An update that fixes 10 vulnerabilities is now available.

Description:

   This update for xen fixes the following issues:

   - CVE-2022-26356: Fixed potential race conditions in dirty memory tracking
     that could cause a denial of service in the host (bsc#1197423).
   - CVE-2022-26357: Fixed a potential race condition in memory cleanup for
     hosts using VT-d IOMMU hardware, which could lead to a denial of service
     in the host (bsc#1197425).
   - CVE-2022-26358,CVE-2022-26359,CVE-2022-26360,CVE-2022-26361: Fixed
     various memory corruption issues for hosts using VT-d or AMD-Vi IOMMU
     hardware. These could be leveraged by an attacker to cause a denial of
     service in the host (bsc#1197426).
   - CVE-2022-0001, CVE-2022-0002, CVE-2021-26401: Added BHB speculation
     issue mitigations (bsc#1196915).
   - CVE-2021-20257: Fixed an infinite loop in the e1000 emulated device,
     which could cause an excessive CPU consumption in the host (bsc#1182846).


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-2022-1375=1



Package List:

   - SUSE Linux Enterprise Server 12-SP2-BCL (x86_64):

      xen-4.7.6_22-43.88.1
      xen-debugsource-4.7.6_22-43.88.1
      xen-doc-html-4.7.6_22-43.88.1
      xen-libs-32bit-4.7.6_22-43.88.1
      xen-libs-4.7.6_22-43.88.1
      xen-libs-debuginfo-32bit-4.7.6_22-43.88.1
      xen-libs-debuginfo-4.7.6_22-43.88.1
      xen-tools-4.7.6_22-43.88.1
      xen-tools-debuginfo-4.7.6_22-43.88.1
      xen-tools-domU-4.7.6_22-43.88.1
      xen-tools-domU-debuginfo-4.7.6_22-43.88.1


References:

   https://www.suse.com/security/cve/CVE-2021-20257.html
   https://www.suse.com/security/cve/CVE-2021-26401.html
   https://www.suse.com/security/cve/CVE-2022-0001.html
   https://www.suse.com/security/cve/CVE-2022-0002.html
   https://www.suse.com/security/cve/CVE-2022-26356.html
   https://www.suse.com/security/cve/CVE-2022-26357.html
   https://www.suse.com/security/cve/CVE-2022-26358.html
   https://www.suse.com/security/cve/CVE-2022-26359.html
   https://www.suse.com/security/cve/CVE-2022-26360.html
   https://www.suse.com/security/cve/CVE-2022-26361.html
   https://bugzilla.suse.com/1182846
   https://bugzilla.suse.com/1196915
   https://bugzilla.suse.com/1197423
   https://bugzilla.suse.com/1197425
   https://bugzilla.suse.com/1197426