CVE-2009-3722: High severity linux kernel vulnerability

Q: What is the severity of CVE-2009-3722?

CVE-2009-3722 has a medium severity rating as it can potentially lead to system instability due to improper handling of debug registers.

Q: How do I fix CVE-2009-3722?

To mitigate CVE-2009-3722, you should upgrade to a Linux kernel version that is 2.6.32-rc1 or later.

Q: Which systems are affected by CVE-2009-3722?

CVE-2009-3722 affects various versions of the Linux kernel, specifically versions from 2.6.11 to 2.6.31.

Q: What is the impact of CVE-2009-3722?

The impact of CVE-2009-3722 includes potential crashes or traps that may disrupt the operation of affected systems.

Q: When was CVE-2009-3722 discovered?

CVE-2009-3722 was introduced in Linux kernel version 2.6.30-rc1.

Published Oct 29, 2009

Updated

Quote from the upstream commit: Debug registers may only be accessed from cpl 0. Unfortunately, vmx will code to emulate the instruction even though it was issued from guest userspace, possibly leading to an unexpected trap later.

Introduced in v2.6.30-rc1; Fixed in v2.6.32-rc1.

http://git.kernel.org/linus/0a79b009525b160081d75cef5dbf45817956acf2

Other sources

The handledr function in arch/x86/kvm/vmx.c in the KVM subsystem in the Linux kernel before 2.6.31.1 does not properly verify the Current Privilege Level (CPL) before accessing a debug register, which allows guest OS users to cause a denial of service (trap) on the host OS via a crafted application.

— MITRE

Affected Software

316 affected components

Linux Linux kernel=2.6.27.29

Linux Linux kernel=2.6.27.12

Linux Linux kernel=2.6.20.6

Linux Linux kernel=2.6.20.9

Linux Linux kernel=2.6.11

Linux Linux kernel=2.6.23.4

Linux Linux kernel=2.6.22.15

Linux Linux kernel=2.6.16.16

Linux Linux kernel=2.6.18.7

Linux Linux kernel=2.6.17.12

Linux Linux kernel=2.6.16.39

Linux Linux kernel=2.6.27.3

Linux Linux kernel=2.6.29.3

Linux Linux kernel=2.6.21

Linux Linux kernel=2.6.16.9

Linux Linux kernel=2.6.17.9

Linux Linux kernel=2.6.11.2

Linux Linux kernel=2.6.27.1

Linux Linux kernel=2.6.5

Linux Linux kernel=2.6.15.3

Linux Linux kernel=2.6.27.30

Linux Linux kernel=2.6.11.10

Linux Linux kernel=2.6.24.7

Linux Linux kernel=2.6.1

Linux Linux kernel=2.6.16.43

Linux Linux kernel=2.6.16.6

Linux Linux kernel=2.6.16.8

Linux Linux kernel=2.6.20.13

Linux Linux kernel=2.6.22.4

Linux Linux kernel=2.6.14.7

Linux Linux kernel=2.6.27.18

Linux Linux kernel=2.6.13

Linux Linux kernel=2.6.17.2

Linux Linux kernel=2.6.13.3

Linux Linux kernel=2.6.23.13

Linux Linux kernel=2.6.11.8

Linux Linux kernel=2.6.24.2

Linux Linux kernel=2.6.26.5

Linux Linux kernel=2.6.16.34

Linux Linux kernel=2.6.25.20

Linux Linux kernel=2.6.27.21

Linux Linux kernel=2.6.23.7

Linux Linux kernel<=2.6.31

Linux Linux kernel=2.6.17.8

Linux Linux kernel=2.6.14.4

Linux Linux kernel=2.6.14

Linux Linux kernel=2.6.25.5

Linux Linux kernel=2.6.17.4

Linux Linux kernel=2.6.16.18

Linux Linux kernel=2.6.27.27

Linux Linux kernel=2.6.17.14

Linux Linux kernel=2.6.10

Linux Linux kernel=2.6.23.8

Linux Linux kernel=2.6.16.45

Linux Linux kernel=2.6.22.12

Linux Linux kernel=2.6.25.18

Linux Linux kernel=2.6.14.3

Linux Linux kernel=2.6.29

Linux Linux kernel=2.6.18.3

Linux Linux kernel=2.6.16.37

Linux Linux kernel=2.6.11.6

Linux Linux kernel=2.6.16.48

Linux Linux kernel=2.6.11.11

Linux Linux kernel=2.6.16.13

Linux Linux kernel=2.6.27.10

Linux Linux kernel=2.6.3

Linux Linux kernel=2.6.21.6

Linux Linux kernel=2.6.26.6

Linux Linux kernel=2.6.22.1

Linux Linux kernel=2.6.27.17

Linux Linux kernel=2.6.16.4

Linux Linux kernel=2.6.23.16

Linux Linux kernel=2.6.17.3

Linux Linux kernel=2.6.24.1

Linux Linux kernel=2.6.20.5

Linux Linux kernel=2.6.22

Linux Linux kernel=2.6.28.4

Linux Linux kernel=2.6.4

Linux Linux kernel=2.6.27.16

Linux Linux kernel=2.6.26

Linux Linux kernel=2.6.16.15

Linux Linux kernel=2.6.27.20

Linux Linux kernel=2.6.15.6

Linux Linux kernel=2.6.26.3

Linux Linux kernel=2.6.20.16

Linux Linux kernel=2.6.15.1

Linux Linux kernel=2.6.11.5

Linux Linux kernel=2.6.28.2

Linux Linux kernel=2.6.25.9

Linux Linux kernel=2.6.19.3

Linux Linux kernel=2.6.27.4

Linux Linux kernel=2.6.27

Linux Linux kernel=2.6.19.4

Linux Linux kernel=2.6.25.13

Linux Linux kernel=2.6.28.5

Linux Linux kernel=2.6.19.1

Linux Linux kernel=2.6.18.4

Linux Linux kernel=2.6.16.1

Linux Linux kernel=2.6.18.1

Linux Linux kernel=2.6.20.21

Linux Linux kernel=2.6.27.13

Linux Linux kernel=2.6.23.1

Linux Linux kernel=2.6.2

Linux Linux kernel=2.6.14.5

Linux Linux kernel=2.6.13.2

Linux Linux kernel=2.6.17.5

Linux Linux kernel=2.6.18.5

Linux Linux kernel=2.6.21.1

Linux Linux kernel=2.6.16.32

Linux Linux kernel=2.6.13.5

Linux Linux kernel=2.6.16.57

Linux Linux kernel=2.6.16.49

Linux Linux kernel=2.6.25.3

Linux Linux kernel=2.6.17

Linux Linux kernel=2.6.24

Linux Linux kernel=2.6.19.2

Linux Linux kernel=2.6.26.2

Linux Linux kernel=2.6.21.4

Linux Linux kernel=2.6.16.11

Linux Linux kernel=2.6.20.17

Linux Linux kernel=2.6.16.14

Linux Linux kernel=2.6.20.12

Linux Linux kernel=2.6.16.25

Linux Linux kernel=2.6.27.15

Linux Linux kernel=2.6.16.21

Linux Linux kernel=2.6.16.33

Linux Linux kernel=2.6.30.7

Linux Linux kernel=2.6.8

Linux Linux kernel=2.6.16.28

Linux Linux kernel=2.6.17.10

Linux Linux kernel=2.6.21.5

Linux Linux kernel=2.6.25.15

Linux Linux kernel=2.6.14.1

Linux Linux kernel=2.6.23.15

Linux Linux kernel=2.6.16.23

Linux Linux kernel=2.6.29.4

Linux Linux kernel=2.6.12.5

Linux Linux kernel=2.6.15.7

Linux Linux kernel=2.6.20

Linux Linux kernel=2.6.23.10

Linux Linux kernel=2.6.22.7

Linux Linux kernel=2.6.27.26

Linux Linux kernel=2.6.16.3

Linux Linux kernel=2.6.27.8

Linux Linux kernel=2.6.26.1

Linux Linux kernel=2.6.25.19

Linux Linux kernel=2.6.20.20

Linux Linux kernel=2.6.16.36

Linux Linux kernel=2.6.30.8

Linux Linux kernel=2.6.14.6

Linux Linux kernel=2.6.12.1

Linux Linux kernel=2.6.27.9

Linux Linux kernel=2.6.11.9

Linux Linux kernel=2.6.16.46

Linux Linux kernel=2.6.17.1

Linux Linux kernel=2.6.20.8

Linux Linux kernel=2.6.27.25

Linux Linux kernel=2.6.30.9

Linux Linux kernel=2.6.20.15

Linux Linux kernel=2.6.22.18

Linux Linux kernel=2.6.0

Linux Linux kernel=2.6.25.8

Linux Linux kernel=2.6.16.54

Linux Linux kernel=2.6.13.4

Linux Linux kernel=2.6.20.18

Linux Linux kernel=2.6.23.9

Linux Linux kernel=2.6.22.6

Linux Linux kernel=2.6.23.3

Linux Linux kernel=2.6.18.8

Linux Linux kernel=2.6.22.3

Linux Linux kernel=2.6.12.2

Linux Linux kernel=2.6.16.31

Linux Linux kernel=2.6.16.26

Linux Linux kernel=2.6.16.62

Linux Linux kernel=2.6.18.2

Linux Linux kernel=2.6.28.8

Linux Linux kernel=2.6.16.29

Linux Linux kernel=2.6.29.1

Linux Linux kernel=2.6.24.4

Linux Linux kernel=2.6.27.19

Linux Linux kernel=2.6.25.16

Linux Linux kernel=2.6.22.9

Linux Linux kernel=2.6.25.17

Linux Linux kernel=2.6.20.11

Linux Linux kernel=2.6.19

Linux Linux kernel=2.6.20.3

Linux Linux kernel=2.6.16

Linux Linux kernel=2.6.30.4

Linux Linux kernel=2.6.28.3

Linux Linux kernel=2.6.22.13

Linux Linux kernel=2.6.19.7

Linux Linux kernel=2.6.21.3

Linux Linux kernel=2.6.27.28

Linux Linux kernel=2.6.24.5

Linux Linux kernel=2.6.16.51

Linux Linux kernel=2.6.15.2

Linux Linux kernel=2.6.20.19

Linux Linux kernel=2.6.16.22

Linux Linux kernel=2.6.22.17

Linux Linux kernel=2.6.16.58

Linux Linux kernel=2.6.16.40

Linux Linux kernel=2.6.16.47

Linux Linux kernel=2.6.16.42

Linux Linux kernel=2.6.27.22

Linux Linux kernel=2.6.23.14

Linux Linux kernel=2.6.17.11

Linux Linux kernel=2.6.16.10

Linux Linux kernel=2.6.12.4

Linux Linux kernel=2.6.16.41

Linux Linux kernel=2.6.16.52

Linux Linux kernel=2.6.11.3

Linux Linux kernel=2.6.20.10

Linux Linux kernel=2.6.16.24

Linux Linux kernel=2.6.25.10

Linux Linux kernel=2.6.22.11

Linux Linux kernel=2.6.16.55

Linux Linux kernel=2.6.23

Linux Linux kernel=2.6.12.3

Linux Linux kernel=2.6.22.10

Linux Linux kernel=2.6.29.6

Linux Linux kernel=2.6.23.17

Linux Linux kernel=2.6.27.5

Linux Linux kernel=2.6.23.2

Linux Linux kernel=2.6.25.1

Linux Linux kernel=2.6.25.4

Linux Linux kernel=2.6.28.9

Linux Linux kernel=2.6.30.2

Linux Linux kernel=2.6.7

Linux Linux kernel=2.6.21.7

Linux Linux kernel=2.6.30.6

Linux Linux kernel=2.6.16.30

Linux Linux kernel=2.6.21.2

Linux Linux kernel=2.6.15.4

Linux Linux kernel=2.6.27.7

Linux Linux kernel=2.6.16.59

Linux Linux kernel=2.6.30.1

Linux Linux kernel=2.6.16.38

Linux Linux kernel=2.6.16.17

Linux Linux kernel=2.6.26.8

Linux Linux kernel=2.6.20.2

Linux Linux kernel=2.6.28.6

Linux Linux kernel=2.6.16.12

Linux Linux kernel=2.6.16.27

Linux Linux kernel=2.6.16.53

Linux Linux kernel=2.6.28.7

Linux Linux kernel=2.6.12.6

Linux Linux kernel=2.6.17.7

Linux Linux kernel=2.6.20.1

Linux Linux kernel=2.6.11.7

Linux Linux kernel=2.6.16.2

Linux Linux kernel=2.6.24.6

Linux Linux kernel=2.6.18.6

Linux Linux kernel=2.6.15

Linux Linux kernel=2.6.16.44

Linux Linux kernel=2.6.23.12

Linux Linux kernel=2.6.16.35

Linux Linux kernel=2.6.19.6

Linux Linux kernel=2.6.16.50

Linux Linux kernel=2.6.25.11

Linux Linux kernel=2.6.27.31

Linux Linux kernel=2.6.29.2

Linux Linux kernel=2.6.23.5

Linux Linux kernel=2.6.22.8

Linux Linux kernel=2.6.14.2

Linux Linux kernel=2.6.16.61

Linux Linux kernel=2.6.19.5

Linux Linux kernel=2.6.18

Linux Linux kernel=2.6.27.24

Linux Linux kernel=2.6.20.4

Linux Linux kernel=2.6.17.6

Linux Linux kernel=2.6.23.6

Linux Linux kernel=2.6.27.2

Linux Linux kernel=2.6.16.7

Linux Linux kernel=2.6.17.13

Linux Linux kernel=2.6.16.60

Linux Linux kernel=2.6.22.2

Linux Linux kernel=2.6.8.1

Linux Linux kernel=2.6.27.11

Linux Linux kernel=2.6.16.56

Linux Linux kernel=2.6.22.19

Linux Linux kernel=2.6.24.3

Linux Linux kernel=2.6.25

Linux Linux kernel=2.6.20.14

Linux Linux kernel=2.6.25.2

Linux Linux kernel=2.6.22.5

Linux Linux kernel=2.6.25.7

Linux Linux kernel=2.6.30.5

Linux Linux kernel=2.6.25.14

Linux Linux kernel=2.6.20.7

Linux Linux kernel=2.6.28.1

Linux Linux kernel=2.6.16.5

Linux Linux kernel=2.6.30

Linux Linux kernel=2.6.11.4

Linux Linux kernel=2.6.26.4

Linux Linux kernel=2.6.25.12

Linux Linux kernel=2.6.16.19

Linux Linux kernel=2.6.27.6

Linux Linux kernel=2.6.26.7

Linux Linux kernel=2.6.25.6

Linux Linux kernel=2.6.11.12

Linux Linux kernel=2.6.16.20

Linux Linux kernel=2.6.15.5

Linux Linux kernel=2.6.28.10

Linux Linux kernel=2.6.22.16

Linux Linux kernel=2.6.11.1

Linux Linux kernel=2.6.30.3

Linux Linux kernel=2.6.9

Linux Linux kernel=2.6.27.23

Linux Linux kernel=2.6.13.1

Linux Linux kernel=2.6.23.11

Linux Linux kernel=2.6.27.14

Linux Linux kernel=2.6.28

Linux Linux kernel=2.6.29.5

Linux Linux kernel=2.6.22.14

Linux Linux kernel=2.6.6

Linux Linux kernel=2.6.12

Event History

Oct 29, 2009

Data Sourced

03:09 AM

DescriptionSeverityAffected Software

Oct 30, 2009

CVE Published

via MITRE·08:05 PM

Data Sourced

via MITRE·08:05 PM

Description

Frequently Asked Questions

What is the severity of CVE-2009-3722?

CVE-2009-3722 has a medium severity rating as it can potentially lead to system instability due to improper handling of debug registers.

How do I fix CVE-2009-3722?