CVE-2012-0045

Public Exploit

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.

4.7

CVSS

Severity: Medium

CVSS 2.0 •

EPSS 0.41%

Vendor Advisory opensuse.org

Affected: n/a n/a

References

Link	Tags
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.14
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=c2226fc9e87ba3da060e47333657cd6616652b84
https://bugzilla.redhat.com/show_bug.cgi?id=773370	exploit
http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00013.html	vendor advisory
http://www.openwall.com/lists/oss-security/2012/01/12/2	mailing list exploit
https://github.com/torvalds/linux/commit/c2226fc9e87ba3da060e47333657cd6616652b84	patch exploit

Frequently Asked Questions

What is the severity of CVE-2012-0045?: CVE-2012-0045 has been scored as a medium severity vulnerability.
How to fix CVE-2012-0045?: To fix CVE-2012-0045, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2012-0045 being actively exploited in the wild?: It is possible that CVE-2012-0045 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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