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CVE-2016-8630

17
FAUCET Score

CVE-2016-8630 describes a denial-of-service vulnerability in the Linux kernel, specifically affecting KVM-enabled systems before version 4.8.7. A local attacker can trigger a host OS crash by manipulating a ModR/M byte during instruction decode. This vulnerability has a CVSS score of 5.5 (Medium), indicating low attack complexity and requiring local privileges, with the primary impact being high availability loss. There is no known active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant media coverage, though it has received minimal community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.8.6CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.5MEDIUM

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.36%
Probability of exploitation in next 30 days
EPSS Percentile
29.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0036 is in the 85th percentile among its peer group of 15,938 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

github_advisorypatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-rt-0:3.10.0-514.10.2.rt56.435.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-0:3.10.0-514.10.2.el7
View patch

Vendor Advisories (1)

redhatCVE-2016-8630Important

kernel: kvm: x86: NULL pointer dereference during instruction decode

Nov 2, 2016

References

git.kernel.org / cgit/linux/kernel/git/torvalds/linux.git/commit
Issue TrackingPatchVendor Advisory
rhn.redhat.com / errata/RHSA-2017-0386.html
rhn.redhat.com / errata/RHSA-2017-0387.html
bugzilla.redhat.com / show_bug.cgi
Issue Tracking
github.com / torvalds/linux/commit/d9092f52d7e61dd1557f2db2400ddb430e85937e
Issue TrackingPatchThird Party Advisory
kernel.org / pub/linux/kernel/v4.x/ChangeLog-4.8.7
Release Notes
openwall.com / lists/oss-security/2016/11/22/3
Mailing ListThird Party Advisory
securityfocus.com / bid/94459