VulnerabilityModified
CVE-2012-0045
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…
MEDIUM 4.7EPSS 1.01%
Does this matter?
Lower severity and a low EPSS score (1.01%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 2.0
- 4.7 MEDIUMAV:L/AC:M/Au:N/C:N/I:N/A:C
- EPSS
- 1.01% probability · 61th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- secalert@redhat.com
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=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/2012/01/12/2Exploit
- https://bugzilla.redhat.com/show_bug.cgi?id=773370Exploit
- https://github.com/torvalds/linux/commit/c2226fc9e87ba3da060e47333657cd6616652b84Exploit, Patch
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=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/2012/01/12/2Exploit
- https://bugzilla.redhat.com/show_bug.cgi?id=773370Exploit
- https://github.com/torvalds/linux/commit/c2226fc9e87ba3da060e47333657cd6616652b84Exploit, Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.