SUSE Security Update: Security update for microcode_ctl
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Announcement ID: SUSE-SU-2018:0009-1
Rating: important
References: #1068032
Cross-References: CVE-2017-5715
Affected Products:
SUSE Linux Enterprise Server 11-SP4
SUSE Linux Enterprise Server 11-SP3-LTSS
SUSE Linux Enterprise Point of Sale 11-SP3
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An update that fixes one vulnerability is now available.

Description:

This update for microcode_ctl fixes the following issues:

Added microcode_amd_fam17h.bin (bsc#1068032 CVE-2017-5715)

This new firmware disables branch prediction on AMD family 17h processor.

Also the CPU microcode for Intel Haswell-X, Skylake-X and Broadwell-X
chipsets was updated to report both branch prediction control via CPUID
flag and ability to control branch prediction via an MSR register.

This update is part of a mitigation for a branch predictor based
information disclosure attack, and needs additional code in the Linux
Kernel to be active (bsc#1068032 CVE-2017-5715)

Patch Instructions:

To install this SUSE Security Update use YaST online_update.
Alternatively you can run the command listed for your product:

– SUSE Linux Enterprise Server 11-SP4:

zypper in -t patch slessp4-microcode_ctl-13390=1

– SUSE Linux Enterprise Server 11-SP3-LTSS:

zypper in -t patch slessp3-microcode_ctl-13390=1

– SUSE Linux Enterprise Point of Sale 11-SP3:

zypper in -t patch sleposp3-microcode_ctl-13390=1

To bring your system up-to-date, use “zypper patch”.

Package List:

– SUSE Linux Enterprise Server 11-SP4 (i586 x86_64):

microcode_ctl-1.17-102.83.6.1

– SUSE Linux Enterprise Server 11-SP3-LTSS (i586 x86_64):

microcode_ctl-1.17-102.83.6.1

– SUSE Linux Enterprise Point of Sale 11-SP3 (i586):

microcode_ctl-1.17-102.83.6.1

References:

https://www.suse.com/security/cve/CVE-2017-5715.html
https://bugzilla.suse.com/1068032

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