UBUNTU-CVE-2012-0045
Advisory lineage Upstream: 1 Downstream: 0
Upstream
Published: 13 Jan 2012, 00:00
Last modified:04 Feb 2026, 03:20
Vulnerability Summary
Overall Risk (default)
minimal
0/100 CVSS Score
No data
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected
Timeline
13 Jan 2012, 00:00
Published
Vulnerability first disclosed
04 Feb 2026, 03:20
Last Modified
Vulnerability information updated
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.
Affected Systems
- ubuntu•linux
< 3.11.0-12.19 | < 4.2.0-16.19
- ubuntu•linux-aws
< 4.4.0-1002.2 | < 4.4.0-1001.10
- ubuntu•linux-flo
< 3.4.0-1.3 | < 3.4.0-5.22
- ubuntu•linux-gke
< 4.4.0-1003.3
- ubuntu•linux-goldfish
< 3.4.0-1.9 | < 3.4.0-4.27
- ubuntu•linux-hwe
< 4.8.0-36.36~16.04.1
- ubuntu•linux-lts-utopic
< 3.16.0-25.33~14.04.2
- ubuntu•linux-lts-vivid
< 3.19.0-18.18~14.04.1
- ubuntu•linux-lts-wily
< 4.2.0-18.22~14.04.1
- ubuntu•linux-lts-xenial
< 4.4.0-13.29~14.04.1
- ubuntu•linux-mako
< 3.4.0-3.21 | < 3.4.0-7.40
- ubuntu•linux-manta
< 3.4.0-4.19
- ubuntu•linux-raspi2
< 4.2.0-1013.19
- ubuntu•linux-snapdragon
< 4.4.0-1012.12
References (15)
- https://ubuntu.com/security/CVE-2012-0045
- http://www.openwall.com/lists/oss-security/2012/01/11/4
- https://lkml.org/lkml/2011/12/28/170
- http://www.spinics.net/lists/kvm/msg66633.html
- https://ubuntu.com/security/notices/USN-1407-1
- https://ubuntu.com/security/notices/USN-1405-1
- https://ubuntu.com/security/notices/USN-1406-1
- https://ubuntu.com/security/notices/USN-1421-1
- https://ubuntu.com/security/notices/USN-1422-1
- https://ubuntu.com/security/notices/USN-1425-1
- https://ubuntu.com/security/notices/USN-1426-1
- https://ubuntu.com/security/notices/USN-1431-1
- https://ubuntu.com/security/notices/USN-1433-1
- https://ubuntu.com/security/notices/USN-1440-1
- https://www.cve.org/CVERecord?id=CVE-2012-0045