Go to homepageCyberStrike

Menu

Star on GitHub · 3.2k
Sign inDownload

CVE-2012-0045

4.7 · MEDIUM

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…

Published Jul 3, 2012linuxEPSS 1.01%

Overview

CVE-2012-0045 is a medium-severity vulnerability affecting linux linux_kernel. It was published on July 3, 2012 and has a CVSS 2.0 base score of 4.7 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 4.7, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
linuxlinux_kernel0Affected

References

Refgit.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=c2226fc9e87ba3da060e47333657cd6616652b84Reflists.opensuse.org/opensuse-security-announce/2012-05/msg00013.htmlRefwww.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.14Refwww.openwall.com/lists/oss-security/2012/01/12/2Refbugzilla.redhat.com/show_bug.cgi?id=773370GitHubgithub.com/torvalds/linux/commit/c2226fc9e87ba3da060e47333657cd6616652b84Refgit.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=c2226fc9e87ba3da060e47333657cd6616652b84Reflists.opensuse.org/opensuse-security-announce/2012-05/msg00013.htmlRefwww.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.14Refwww.openwall.com/lists/oss-security/2012/01/12/2

How CyberStrike helps

Frequently asked questions

What is CVE-2012-0045?

CVE-2012-0045 is a medium-severity vulnerability affecting linux linux_kernel. It was published on July 3, 2012 and has a CVSS 2.0 base score of 4.7 (MEDIUM).

How severe is CVE-2012-0045?

This vulnerability has a CVSS 2.0 base score of 4.7, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2012-0045?

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2012-0045?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2012-0045 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

Related MEDIUM CVEs from 2012

View all
Browse by year2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999