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CVE-2016-8630

Good to know:

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Date: November 27, 2016

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.

Language: C

Severity Score

Related Resources (12)

http://rhn.redhat.com/errata/RHSA-2017-0387.html
http://www.openwall.com/lists/oss-security/2016/11/22/3
https://people.canonical.com/~ubuntu-security/cve/CVE-2016-8630
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.7
http://www.securityfocus.com/bid/94459
https://nvd.nist.gov/vuln/detail/CVE-2016-8630
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d9092f52d7e61dd1557f2db2400ddb430e85937e
https://access.redhat.com/security/cve/CVE-2016-8630
http://rhn.redhat.com/errata/RHSA-2017-0386.html
https://github.com/torvalds/linux/commit/d9092f52d7e61dd1557f2db2400ddb430e85937e
https://bugzilla.redhat.com/show_bug.cgi?id=1393350
https://www.mend.io/vulnerability-database/CVE-2016-8630

Severity Score

Weakness Type (CWE)

Improper Access Control

CWE-284

NULL Pointer Dereference

CWE-476

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): COMPLETE
Additional information:

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