SUSE 12: 2018:2341-1 Critical: Kernel Live Patch Addresses Data Leak
suse
August 16, 2018
An update that fixes two vulnerabilities is now available
Summary
This update for the Linux Kernel 3.12.61-52_125 fixes several issues. The following security issues were fixed: - CVE-2018-3646: Local attackers in virtualized guest systems could use speculative code patterns on hyperthreaded processors to read data present in the L1 Datacache used by other hyperthreads on the same CPU core, potentially leaking sensitive data, even from other virtual machines or the host system (bsc#1099306). - CVE-2018-10853: A flaw was found in kvm. In which certain instructions such as sgdt/sidt call segmented_write_std didn't propagate access correctly. As such, during userspace induced exception, the guest can incorrectly assume that the exception happened in the kernel and panic. (bsc#1097108). Patch Instructions:
Topics Covered
References
#1097108 #1099306
Cross- CVE-2018-10853 CVE-2018-3646
Affected Products:
SUSE Linux Enterprise Server 12-LTSS
https://www.suse.com/security/cve/CVE-2018-10853.html
https://www.suse.com/security/cve/CVE-2018-3646.html
https://bugzilla.suse.com/1097108
https://bugzilla.suse.com/1099306
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Severity
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Critical
Announcement ID: SUSE-SU-2018:2341-1
Rating: important
Topics Covered
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