CVE-2016-8630
Linux KVM x86_decode_insn Denial of Service
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.
INFO
Published Date :
Nov. 28, 2016, 3:59 a.m.
Last Modified :
Feb. 12, 2023, 11:26 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
1.8
Public PoC/Exploit Available at Github
CVE-2016-8630 has a 1 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2016-8630.
| URL | Resource |
|---|---|
| http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d9092f52d7e61dd1557f2db2400ddb430e85937e | Issue Tracking Patch Vendor Advisory |
| http://rhn.redhat.com/errata/RHSA-2017-0386.html | |
| http://rhn.redhat.com/errata/RHSA-2017-0387.html | |
| http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.7 | Release Notes |
| http://www.openwall.com/lists/oss-security/2016/11/22/3 | Mailing List Third Party Advisory |
| http://www.securityfocus.com/bid/94459 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1393350 | Issue Tracking |
| https://github.com/torvalds/linux/commit/d9092f52d7e61dd1557f2db2400ddb430e85937e | Issue Tracking Patch Third Party Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
Python
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2016-8630 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2016-8630 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Feb. 12, 2023
Action Type Old Value New Value Changed Description Linux kernel built with the Kernel-based Virtual Machine (CONFIG_KVM) support is vulnerable to a null pointer dereference flaw. It could occur on x86 platform, when emulating an undefined instruction. An attacker could use this flaw to crash the host kernel resulting in DoS. 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. Removed CVSS V2 Metadata Access Complexity Insufficient Information Removed CVSS V2 Red Hat, Inc. (AV:A/AC:M/Au:S/C:N/I:N/A:C) Removed CVSS V3 Red Hat, Inc. AV:A/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H Removed Reference https://access.redhat.com/errata/RHSA-2017:0386 [No Types Assigned] Removed Reference https://access.redhat.com/errata/RHSA-2017:0387 [No Types Assigned] Removed Reference https://access.redhat.com/security/cve/CVE-2016-8630 [No Types Assigned] -
CVE Modified by [email protected]
Feb. 02, 2023
Action Type Old Value New Value Changed 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. Linux kernel built with the Kernel-based Virtual Machine (CONFIG_KVM) support is vulnerable to a null pointer dereference flaw. It could occur on x86 platform, when emulating an undefined instruction. An attacker could use this flaw to crash the host kernel resulting in DoS. Added CVSS V2 Red Hat, Inc. (AV:A/AC:M/Au:S/C:N/I:N/A:C) Added CVSS V3 Red Hat, Inc. AV:A/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H Added Reference https://access.redhat.com/errata/RHSA-2017:0387 [No Types Assigned] Added Reference https://access.redhat.com/security/cve/CVE-2016-8630 [No Types Assigned] Added Reference https://access.redhat.com/errata/RHSA-2017:0386 [No Types Assigned] -
CVE Modified by [email protected]
Jan. 05, 2018
Action Type Old Value New Value Added Reference http://rhn.redhat.com/errata/RHSA-2017-0387.html [No Types Assigned] Added Reference http://rhn.redhat.com/errata/RHSA-2017-0386.html [No Types Assigned] -
Initial Analysis by [email protected]
Nov. 28, 2016
Action Type Old Value New Value Added CPE Configuration Configuration 1 OR *cpe:2.3:o:linux:linux_kernel:4.8.6:*:*:*:*:*:*:* (and previous) Added CVSS V2 (AV:L/AC:L/Au:N/C:N/I:N/A:C) Added CVSS V3 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Changed Reference Type http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.7 No Types Assigned http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.7 Release Notes Changed Reference Type https://github.com/torvalds/linux/commit/d9092f52d7e61dd1557f2db2400ddb430e85937e No Types Assigned https://github.com/torvalds/linux/commit/d9092f52d7e61dd1557f2db2400ddb430e85937e Third Party Advisory, Issue Tracking, Patch Changed Reference Type http://www.openwall.com/lists/oss-security/2016/11/22/3 No Types Assigned http://www.openwall.com/lists/oss-security/2016/11/22/3 Third Party Advisory, Mailing List Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=1393350 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=1393350 Issue Tracking Changed Reference Type http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d9092f52d7e61dd1557f2db2400ddb430e85937e No Types Assigned http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d9092f52d7e61dd1557f2db2400ddb430e85937e Issue Tracking, Vendor Advisory, Patch Added CWE CWE-284 Added CWE CWE-476 -
CVE Modified by [email protected]
Nov. 28, 2016
Action Type Old Value New Value Added Reference http://www.securityfocus.com/bid/94459 [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2016-8630 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2016-8630
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.04 }} 0.00%
score
0.05635
percentile