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             AUSCERT External Security Bulletin Redistribution

                          Security update for xen
                              2 December 2021


        AusCERT Security Bulletin Summary

Product:           xen
Publisher:         SUSE
Operating System:  SUSE
Impact/Access:     Execute Arbitrary Code/Commands -- Existing Account
                   Denial of Service               -- Existing Account
                   Access Confidential Data        -- Existing Account
                   Unauthorised Access             -- Existing Account
                   Reduced Security                -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2021-28709 CVE-2021-28706 CVE-2021-28705
                   CVE-2021-28703 CVE-2021-28701 CVE-2021-28698
                   CVE-2021-28697 CVE-2021-28692 CVE-2021-28690
                   CVE-2021-20255 CVE-2021-3930 CVE-2021-3682
                   CVE-2021-3595 CVE-2021-3594 CVE-2021-3592
                   CVE-2021-3527 CVE-2021-0089 

Reference:         ESB-2021.4015

Original Bulletin: 

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SUSE Security Update: Security update for xen


Announcement ID:   SUSE-SU-2021:14848-1
Rating:            moderate
References:        #1182654 #1186013 #1186429 #1186433 #1186434 #1187369
                   #1187376 #1187378 #1189150 #1189376 #1189378 #1189632
                   #1192526 #1192554 #1192555 #1192559
Cross-References:  CVE-2021-0089 CVE-2021-20255 CVE-2021-28690 CVE-2021-28692
                   CVE-2021-28697 CVE-2021-28698 CVE-2021-28701 CVE-2021-28703
                   CVE-2021-28705 CVE-2021-28706 CVE-2021-28709 CVE-2021-3527
                   CVE-2021-3592 CVE-2021-3594 CVE-2021-3595 CVE-2021-3682
Affected Products:
                   SUSE Linux Enterprise Server 11-SP4-LTSS
                   SUSE Linux Enterprise Debuginfo 11-SP4

An update that fixes 17 vulnerabilities is now available.


This update for xen fixes the following issues:

  o CVE-2021-0089: Fixed Speculative Code Store Bypass (XSA-375) (bsc#1186433).
  o CVE-2021-20255: Fixed stack overflow via infinite recursion in eepro100
  o CVE-2021-28690: Fixed x86 TSX Async Abort protections not restored after S3
    (XSA-377) (bsc#1186434).
  o CVE-2021-28692: Fixed inappropriate x86 IOMMU timeout detection / handling
    (XSA-373) (bsc#1186429).
  o CVE-2021-28697: Fixed grant table v2 status pages may remain accessible
    after de-allocation (XSA-379) (bsc#1189376).
  o CVE-2021-28698: Fixed long running loops in grant table handling. (XSA-380)
  o CVE-2021-28701: Fixed race condition in XENMAPSPACE_grant_table handling
    (XSA-384) (bsc#1189632).
  o CVE-2021-28703: Fixed grant table v2 status pages may remain accessible
    after de-allocation (take two) (XSA-387) (bsc#1192555).
  o CVE-2021-28705, CVE-2021-28709: Fixed issues with partially successful P2M
    updates on x86 (XSA-389) (bsc#1192559).
  o CVE-2021-28706: Fixed guests may exceed their designated memory limit
    (XSA-385) (bsc#1192554).
  o CVE-2021-3527: Fixed unbounded stack allocation in usbredir (bsc#1186013).
  o CVE-2021-3592: Fixed invalid pointer initialization may lead to information
    disclosure in slirp (bootp) (bsc#1187369).
  o CVE-2021-3594: Fixed invalid pointer initialization may lead to information
    disclosure in slirp (udp) (bsc#1187378).
  o CVE-2021-3595: Fixed invalid pointer initialization may lead to information
    disclosure in slirp (tftp) (bsc#1187376).
  o CVE-2021-3682: Fixed free call on invalid pointer in usbredir bufp_alloc
  o CVE-2021-3930: Fixed off-by-one error in mode_sense_page() in hw/scsi/
    scsi-disk.c (bsc#1192526).

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:

  o SUSE Linux Enterprise Server 11-SP4-LTSS:
    zypper in -t patch slessp4-xen-14848=1
  o SUSE Linux Enterprise Debuginfo 11-SP4:
    zypper in -t patch dbgsp4-xen-14848=1

Package List:

  o SUSE Linux Enterprise Server 11-SP4-LTSS (i586 x86_64):
  o SUSE Linux Enterprise Server 11-SP4-LTSS (x86_64):
  o SUSE Linux Enterprise Server 11-SP4-LTSS (i586):
  o SUSE Linux Enterprise Debuginfo 11-SP4 (i586 x86_64):


  o https://www.suse.com/security/cve/CVE-2021-0089.html
  o https://www.suse.com/security/cve/CVE-2021-20255.html
  o https://www.suse.com/security/cve/CVE-2021-28690.html
  o https://www.suse.com/security/cve/CVE-2021-28692.html
  o https://www.suse.com/security/cve/CVE-2021-28697.html
  o https://www.suse.com/security/cve/CVE-2021-28698.html
  o https://www.suse.com/security/cve/CVE-2021-28701.html
  o https://www.suse.com/security/cve/CVE-2021-28703.html
  o https://www.suse.com/security/cve/CVE-2021-28705.html
  o https://www.suse.com/security/cve/CVE-2021-28706.html
  o https://www.suse.com/security/cve/CVE-2021-28709.html
  o https://www.suse.com/security/cve/CVE-2021-3527.html
  o https://www.suse.com/security/cve/CVE-2021-3592.html
  o https://www.suse.com/security/cve/CVE-2021-3594.html
  o https://www.suse.com/security/cve/CVE-2021-3595.html
  o https://www.suse.com/security/cve/CVE-2021-3682.html
  o https://www.suse.com/security/cve/CVE-2021-3930.html
  o https://bugzilla.suse.com/1182654
  o https://bugzilla.suse.com/1186013
  o https://bugzilla.suse.com/1186429
  o https://bugzilla.suse.com/1186433
  o https://bugzilla.suse.com/1186434
  o https://bugzilla.suse.com/1187369
  o https://bugzilla.suse.com/1187376
  o https://bugzilla.suse.com/1187378
  o https://bugzilla.suse.com/1189150
  o https://bugzilla.suse.com/1189376
  o https://bugzilla.suse.com/1189378
  o https://bugzilla.suse.com/1189632
  o https://bugzilla.suse.com/1192526
  o https://bugzilla.suse.com/1192554
  o https://bugzilla.suse.com/1192555
  o https://bugzilla.suse.com/1192559

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