CVE-2012-0045

Severity

47%

Complexity

34%

Confidentiality

115%

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.

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 Base Score 4.7. CVSS Attack Vector: local. CVSS Attack Complexity: medium. CVSS Vector: (AV:L/AC:M/Au:N/C:N/I:N/A:C).

Overview

First reported 12 years ago

2012-07-03 16:40:00

Last updated 7 years ago

2017-12-29 02:29:00

Affected Software

Linux Kernel 3.0 release candidate 1

3.0

Linux Kernel 3.0 release candidate 2

3.0

Linux Kernel 3.0 release candidate 3

3.0

Linux Kernel 3.0 release candidate 4

3.0

Linux Kernel 3.0 release candidate 5

3.0

Linux Kernel 3.0 release candidate 6

3.0

Linux Kernel 3.0 release candidate 7

3.0

Linux Kernel 3.0.1

3.0.1

Linux Kernel 3.0.2

3.0.2

Linux Kernel 3.0.3

3.0.3

Linux Kernel 3.0.4

3.0.4

Linux Kernel 3.0.5

3.0.5

Linux Kernel 3.0.6

3.0.6

Linux Kernel 3.0.7

3.0.7

Linux Kernel 3.0.8

3.0.8

Linux Kernel 3.0.9

3.0.9

Linux Kernel 3.0.10

3.0.10

Linux Kernel 3.0.11

3.0.11

Linux Kernel 3.0.12

3.0.12

Linux Kernel 3.0.13

3.0.13

Linux Kernel 3.0.14

3.0.14

Linux Kernel 3.0.15

3.0.15

Linux Kernel 3.0.16

3.0.16

Linux Kernel 3.0.17

3.0.17

Linux Kernel 3.0.18

3.0.18

Linux Kernel 3.0.19

3.0.19

Linux Kernel 3.0.20

3.0.20

Linux Kernel 3.0.21

3.0.21

Linux Kernel 3.0.22

3.0.22

Linux Kernel 3.0.23

3.0.23

Linux Kernel 3.0.24

3.0.24

Linux Kernel 3.0.25

3.0.25

Linux Kernel 3.0.26

3.0.26

Linux Kernel 3.0.27

3.0.27

Linux Kernel 3.0.28

3.0.28

Linux Kernel 3.0.29

3.0.29

Linux Kernel 3.0.30

3.0.30

Linux Kernel 3.0.31

3.0.31

Linux Kernel 3.0.32

3.0.32

Linux Kernel 3.0.33

3.0.33

Linux Kernel 3.0.34

3.0.34

Linux Kernel 3.1

3.1

Linux Kernel 3.1 release candidate 1

3.1

Linux Kernel 3.1 release candidate 2

3.1

Linux Kernel 3.1 release candidate 3

3.1

Linux Kernel 3.1 release candidate 4

3.1

Linux Kernel 3.1.1

3.1.1

Linux Kernel 3.1.2

3.1.2

Linux Kernel 3.1.3

3.1.3

Linux Kernel 3.1.4

3.1.4

Linux Kernel 3.1.5

3.1.5

Linux Kernel 3.1.6

3.1.6

Linux Kernel 3.1.7

3.1.7

Linux Kernel 3.1.8

3.1.8

Linux Kernel 3.1.9

3.1.9

Linux Kernel 3.1.10

3.1.10

Linux Kernel 3.2

3.2

Linux Kernel 3.2.1

3.2.1

Linux Kernel 3.2.2

3.2.2

Linux Kernel 3.2.3

3.2.3

Linux Kernel 3.2.4

3.2.4

Linux Kernel 3.2.5

3.2.5

Linux Kernel 3.2.6

3.2.6

Linux Kernel 3.2.7

3.2.7

Linux Kernel 3.2.8

3.2.8

Linux Kernel 3.2.9

3.2.9

Linux Kernel 3.2.10

3.2.10

Linux Kernel 3.2.11

3.2.11

Linux Kernel 3.2.12

3.2.12

Linux Kernel

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=c2226fc9e87ba3da060e47333657cd6616652b84

Exploit

SUSE-SU-2012:0616

http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.14

[oss-security] 20120111 Re: CVE request -- kernel: kvm: syscall instruction induced guest panic

Exploit

https://bugzilla.redhat.com/show_bug.cgi?id=773370

Exploit

https://github.com/torvalds/linux/commit/c2226fc9e87ba3da060e47333657cd6616652b84

Exploit, Patch

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