Vulnerability Name:

CVE-2016-8630 (CCN-119634)

Assigned:2016-11-02
Published:2016-11-02
Updated:2023-02-12
Summary: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.
CVSS v3 Severity:5.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
4.8 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
7.1 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H)
6.2 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Changed
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
6.2 Medium (REDHAT CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H)
5.4 Medium (REDHAT Temporal CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Adjacent
Attack Complexity (AC): Low
Privileges Required (PR): High
User Interaction (UI): None
Scope:Scope (S): Changed
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
CVSS v2 Severity:4.9 Medium (CVSS v2 Vector: AV:L/AC:L/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
4.9 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
5.2 Medium (REDHAT CVSS v2 Vector: AV:A/AC:M/Au:S/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Adjacent_Network
Access Complexity (AC): Medium
Authentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-476
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2016-8630

Source: CCN
Type: Linux Kernel GIT Repository
x86: Check memopp before dereference (CVE-2016-8630)

Source: secalert@redhat.com
Type: Issue Tracking, Patch, Vendor Advisory
secalert@redhat.com

Source: CCN
Type: RHSA-2017-0386
Important: kernel security, bug fix, and enhancement update

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: CCN
Type: RHSA-2017-0387
Important: kernel-rt security and bug fix update

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: secalert@redhat.com
Type: Release Notes
secalert@redhat.com

Source: secalert@redhat.com
Type: Mailing List, Third Party Advisory
secalert@redhat.com

Source: CCN
Type: BID-94459
Linux Kernel 'kvm/emulate.c' Null Pointer Dereference Denial of Service Vulnerability

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: secalert@redhat.com
Type: Issue Tracking
secalert@redhat.com

Source: XF
Type: UNKNOWN
linux-kernel-cve20168630-dos(119634)

Source: secalert@redhat.com
Type: Issue Tracking, Patch, Third Party Advisory
secalert@redhat.com

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2016-8630

Vulnerable Configuration:Configuration RedHat 1:
  • cpe:/o:redhat:enterprise_linux:7:*:*:*:*:*:*:*
    • Configuration RedHat 2:
  • cpe:/o:redhat:enterprise_linux:7::client:*:*:*:*:*
    • Configuration RedHat 3:
  • cpe:/o:redhat:enterprise_linux:7::computenode:*:*:*:*:*
    • Configuration RedHat 4:
  • cpe:/o:redhat:enterprise_linux:7::server:*:*:*:*:*
    • Configuration RedHat 5:
  • cpe:/o:redhat:enterprise_linux:7::workstation:*:*:*:*:*
    • Configuration RedHat 6:
  • cpe:/a:redhat:rhel_extras_rt:7:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/o:linux:linux_kernel:4.8.6:*:*:*:*:*:*:*
  • AND
  • cpe:/o:redhat:enterprise_linux_desktop:7:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_hpc_node:7:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_server:7:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_workstation:7:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_for_real_time:7:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_server_tus:7.3:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:20168630
    V
    		CVE-2016-8630
    2022-09-02
    oval:com.redhat.rhsa:def:20170386
    P
    		RHSA-2017:0386: kernel security, bug fix, and enhancement update (Important)
    2017-03-02
    oval:com.redhat.rhsa:def:20170387
    P
    		RHSA-2017:0387: kernel-rt security and bug fix update (Important)
    2017-03-02
    oval:com.ubuntu.xenial:def:201686300000000
    V
    		CVE-2016-8630 on Ubuntu 16.04 LTS (xenial) - medium.
    2016-11-28
    oval:com.ubuntu.trusty:def:20168630000
    V
    		CVE-2016-8630 on Ubuntu 14.04 LTS (trusty) - medium.
    2016-11-27
    oval:com.ubuntu.xenial:def:20168630000
    V
    		CVE-2016-8630 on Ubuntu 16.04 LTS (xenial) - medium.
    2016-11-27
    oval:com.ubuntu.artful:def:20168630000
    V
    		CVE-2016-8630 on Ubuntu 17.10 (artful) - medium.
    2016-11-27
    oval:com.ubuntu.precise:def:20168630000
    V
    		CVE-2016-8630 on Ubuntu 12.04 LTS (precise) - medium.
    2016-11-27
    BACK
    linux linux kernel 4.8.6
    redhat enterprise linux desktop 7
    redhat enterprise linux hpc node 7
    redhat enterprise linux server 7
    redhat enterprise linux workstation 7
    redhat enterprise linux for real time 7
    redhat enterprise linux server tus 7.3