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 application, as demonstrated by an NASM file.

🔗 References (12)

• secalert@redhathttp://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=c2226fc9e87ba3da060e47333657cd6616652b84
• secalert@redhathttp://lists.opensuse.org/opensuse-security-announce/2012-05/msg00013.html
• secalert@redhathttp://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.14
• secalert@redhathttp://www.openwall.com/lists/oss-security/2012/01/12/2
• secalert@redhathttps://bugzilla.redhat.com/show_bug.cgi?id=773370
• secalert@redhathttps://github.com/torvalds/linux/commit/c2226fc9e87ba3da060e47333657cd6616652b84
• af854a3a-2127-422b-91ae-364da2661108http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=c2226fc9e87ba3da060e47333657cd6616652b84
• af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00013.html
• af854a3a-2127-422b-91ae-364da2661108http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.14
• af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2012/01/12/2
• af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=773370
• af854a3a-2127-422b-91ae-364da2661108https://github.com/torvalds/linux/commit/c2226fc9e87ba3da060e47333657cd6616652b84