CVE-2016-8630

Description

The x86_decode_insn function in arch/x86/kvm/emulate.c in the Linux kernel before 4.8.7, when KVM is enabled, allows local users to cause a denial of service (host OS crash) via a certain use of a ModR/M byte in an undefined instruction.

Category

5.5
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.03%
Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory kernel.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.7 release notes
http://www.securityfocus.com/bid/94459 vdb entry
https://bugzilla.redhat.com/show_bug.cgi?id=1393350 issue tracking
http://rhn.redhat.com/errata/RHSA-2017-0387.html vendor advisory
https://github.com/torvalds/linux/commit/d9092f52d7e61dd1557f2db2400ddb430e85937e issue tracking third party advisory patch
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d9092f52d7e61dd1557f2db2400ddb430e85937e issue tracking patch vendor advisory
http://www.openwall.com/lists/oss-security/2016/11/22/3 third party advisory mailing list
http://rhn.redhat.com/errata/RHSA-2017-0386.html vendor advisory

Frequently Asked Questions

What is the severity of CVE-2016-8630?
CVE-2016-8630 has been scored as a medium severity vulnerability.
How to fix CVE-2016-8630?
To fix CVE-2016-8630, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2016-8630 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2016-8630 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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