Security update for xen

SUSE Security Update: Security update for xen
Announcement ID: SUSE-SU-2018:2410-2
Rating: important
References: #1027519 #1091107 #1103276
Cross-References: CVE-2018-3646
Affected Products:
  • SUSE Linux Enterprise Server 12-SP2-BCL

An update that solves one vulnerability and has two fixes is now available.

Description:

This update for xen fixes the following security issues:

  • CVE-2018-3646: Systems with microprocessors utilizing speculative execution and address translations may have allowed unauthorized disclosure of information residing in the L1 data cache to an attacker with local user access with guest OS privilege via a terminal page fault and a side-channel analysis (bsc#1091107, bsc#1027519).
  • Incorrect MSR_DEBUGCTL handling let guests enable BTS allowing a malicious or buggy guest administrator can lock up the entire host (bsc#1103276)

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-2018-1664=1

Package List:

  • SUSE Linux Enterprise Server 12-SP2-BCL (x86_64):
    • xen-4.7.6_04-43.39.1
    • xen-debugsource-4.7.6_04-43.39.1
    • xen-doc-html-4.7.6_04-43.39.1
    • xen-libs-32bit-4.7.6_04-43.39.1
    • xen-libs-4.7.6_04-43.39.1
    • xen-libs-debuginfo-32bit-4.7.6_04-43.39.1
    • xen-libs-debuginfo-4.7.6_04-43.39.1
    • xen-tools-4.7.6_04-43.39.1
    • xen-tools-debuginfo-4.7.6_04-43.39.1
    • xen-tools-domU-4.7.6_04-43.39.1
    • xen-tools-domU-debuginfo-4.7.6_04-43.39.1

References: