CVE-2012-0045

MEDIUM

Description

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.

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=c2226fc9e87ba3da060e47333657cd6616652b84

http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00013.html

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://bugzilla.redhat.com/show_bug.cgi?id=773370

https://github.com/torvalds/linux/commit/c2226fc9e87ba3da060e47333657cd6616652b84

Details

Source: MITRE

Published: 2012-07-03

Updated: 2017-12-29

Risk Information

CVSS v2.0

Base Score: 4.7

Vector: AV:L/AC:M/Au:N/C:N/I:N/A:C

Impact Score: 6.9

Exploitability Score: 3.4

Severity: MEDIUM