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CVE-2012-0045

Date: July 3, 2012

The em_syscall function in arch/x86/kvm/emulate.c in the KVM implementation in the Linux kernel before 3.2.14 does not properly handle the 0f05 (aka syscall) opcode, which allows guest OS users to cause a denial of service (guest OS crash) via a crafted application, as demonstrated by an NASM file.

Language: C

Severity Score

Related Resources (10)

https://bugzilla.redhat.com/show_bug.cgi?id=773370
https://github.com/torvalds/linux/commit/c2226fc9e87ba3da060e47333657cd6616652b84
https://access.redhat.com/security/cve/CVE-2012-0045
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.14
http://www.openwall.com/lists/oss-security/2012/01/12/2
https://nvd.nist.gov/vuln/detail/CVE-2012-0045
http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00013.html
https://people.canonical.com/~ubuntu-security/cve/CVE-2012-0045
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=c2226fc9e87ba3da060e47333657cd6616652b84
https://www.mend.io/vulnerability-database/CVE-2012-0045

Severity Score

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
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): MEDIUM
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): COMPLETE
Additional information:

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