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SUSE: 2018:2391-1 Important: Linux Kernel Live Patch Addresses Issues

suse
Calendar Grey August 16, 2018
Dist Suse Esm H88
SUSE Security Notice: Critical Linux Kernel live patch released addressing multiple vulnerabilities for SLE 12 SP3. Apply the update immediately.
An update that fixes three vulnerabilities is now available

Summary

This update for the Linux Kernel 4.4.114-92_67 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-2017-18344: The timer_create syscall implementation in kernel/time/posix-timers.c didn't properly validate the sigevent->sigev_notify field, which lead to out-of-bounds access in the show_timer function (called when /proc/$PID/timers is read). This allowed userspace applications to read arbitrary kernel memory (on a

References

#1097108 #1099306 #1103203

Cross- CVE-2017-18344 CVE-2018-10853 CVE-2018-3646

Affected Products:

SUSE Linux Enterprise Server for SAP 12-SP2

SUSE Linux Enterprise Server 12-SP2-LTSS

https://www.suse.com/security/cve/CVE-2017-18344.html

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

https://bugzilla.suse.com/1103203

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2018:2391-1
Rating: important

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