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SUSE: 2018:1636-1 Important: Linux Kernel Critical Issue Fix

suse
Calendar Grey June 11, 2018
Scroller Suse
A vital patch has been released to tackle severe vulnerabilities in the Linux Kernel for SUSE, featuring essential enhancements for user permissions.
An update that solves three vulnerabilities and has one errata is now available

Summary

This update for the Linux Kernel 4.4.120-94_17 fixes several issues. The following security issues were fixed: - CVE-2018-8897: A statement in the System Programming Guide of the Intel 64 and IA-32 Architectures Software Developer's Manual (SDM) was mishandled in the development of some or all operating-system kernels, resulting in unexpected behavior for #DB exceptions that are deferred by MOV SS or POP SS, as demonstrated by (for example) privilege escalation in Windows, macOS, some Xen configurations, or FreeBSD, or a Linux kernel crash. The MOV to SS and POP SS instructions inhibit interrupts (including NMIs), data breakpoints, and single step trap exceptions until the instruction boundary following the next instruction (SDM Vol. 3A; section 6.8.3). (The inhibited data breakpoints are those on memory

Topics%20covered

Topics Covered

security advisory critical issue privilege escalation SUSE Linux Kernel

References

#1083125 #1090368 #1090646 #1090869

Cross- CVE-2018-1087 CVE-2018-8781 CVE-2018-8897

Affected Products:

SUSE Linux Enterprise Live Patching 12-SP3

https://www.suse.com/security/cve/CVE-2018-1087.html

https://www.suse.com/security/cve/CVE-2018-8781.html

https://www.suse.com/security/cve/CVE-2018-8897.html

https://bugzilla.suse.com/1083125

https://bugzilla.suse.com/1090368

https://bugzilla.suse.com/1090646

https://bugzilla.suse.com/1090869

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2018:1636-1
Rating: important

Topics%20covered

Topics Covered

security advisory critical issue privilege escalation SUSE Linux Kernel

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