CVE-2012-6647: Null Pointer Dereference

Q: What is the severity of CVE-2012-6647?

The severity of CVE-2012-6647 is classified as high due to potential system crashes caused by a NULL pointer dereference.

Q: How do I fix CVE-2012-6647?

To fix CVE-2012-6647, update the Linux kernel to version 5.10.223-1 or later.

Q: What systems are affected by CVE-2012-6647?

CVE-2012-6647 affects Linux kernels with versions up to and including 3.4.9.

Q: Can CVE-2012-6647 be exploited remotely?

Exploitation of CVE-2012-6647 typically requires local access to the affected system.

Q: What are the implications of CVE-2012-6647 in a production environment?

CVE-2012-6647 can lead to denial of service attacks, making systems unstable and potentially causing crashes in production environments.

Published May 14, 2014

Updated

Last updated 24 July 2024

Other sources

Linux kernel built with the fast userspace mutexes(CONFIGFUTEX) support is vulnerable to a NULL pointer dereference flaw. It could occur when a waiting task requests wait to be re-queued from non-PI futex to a PI-aware futex via FUTEXWAITREQUEUEPI operation.

An unprivileged user/program could use this flaw to crash the system kernel resulting in DoS.

Upstream fix: ------------- -> https://git.kernel.org/linus/6f7b0a2a5c0fb03be7c25bd1745baa50582348ef

Introduced in: -------------- -> https://git.kernel.org/linus/52400ba946759af28442dee6265c5c0180ac7122

— Red Hat

The futexwaitrequeuepi function in kernel/futex.c in the Linux kernel before 3.5.1 does not ensure that calls have two different futex addresses, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via a crafted FUTEXWAITREQUEUEPI command.

— Launchpad

Affected Software

231 affected componentsFixes available

Linux Linux Kernel<=3.4.9

Linux Linux Kernel=3.0-rc1

Linux Linux Kernel=3.0-rc2

Linux Linux Kernel=3.0-rc3

Linux Linux Kernel=3.0-rc4

Linux Linux Kernel=3.0-rc5

Linux Linux Kernel=3.0-rc6

Linux Linux Kernel=3.0-rc7

Linux Linux Kernel=3.0.1

Linux Linux Kernel=3.0.2

Linux Linux Kernel=3.0.3

Linux Linux Kernel=3.0.4

Linux Linux Kernel=3.0.5

Linux Linux Kernel=3.0.6

Linux Linux Kernel=3.0.7

Linux Linux Kernel=3.0.8

Linux Linux Kernel=3.0.9

Linux Linux Kernel=3.0.10

Linux Linux Kernel=3.0.11

Linux Linux Kernel=3.0.12

Linux Linux Kernel=3.0.13

Linux Linux Kernel=3.0.14

Linux Linux Kernel=3.0.15

Linux Linux Kernel=3.0.16

Linux Linux Kernel=3.0.17

Linux Linux Kernel=3.0.18

Linux Linux Kernel=3.0.19

Linux Linux Kernel=3.0.20

Linux Linux Kernel=3.0.21

Linux Linux Kernel=3.0.22

Linux Linux Kernel=3.0.23

Linux Linux Kernel=3.0.24

Linux Linux Kernel=3.0.25

Linux Linux Kernel=3.0.26

Linux Linux Kernel=3.0.27

Linux Linux Kernel=3.0.28

Linux Linux Kernel=3.0.29

Linux Linux Kernel=3.0.30

Linux Linux Kernel=3.0.31

Linux Linux Kernel=3.0.32

Linux Linux Kernel=3.0.33

Linux Linux Kernel=3.0.34

Linux Linux Kernel=3.0.35

Linux Linux Kernel=3.0.36

Linux Linux Kernel=3.0.37

Linux Linux Kernel=3.0.38

Linux Linux Kernel=3.0.39

Linux Linux Kernel=3.0.40

Linux Linux Kernel=3.0.41

Linux Linux Kernel=3.0.42

Linux Linux Kernel=3.0.43

Linux Linux Kernel=3.0.44

Linux Linux Kernel=3.0.45

Linux Linux Kernel=3.0.46

Linux Linux Kernel=3.0.47

Linux Linux Kernel=3.0.48

Linux Linux Kernel=3.0.49

Linux Linux Kernel=3.0.50

Linux Linux Kernel=3.0.51

Linux Linux Kernel=3.0.52

Linux Linux Kernel=3.0.53

Linux Linux Kernel=3.0.54

Linux Linux Kernel=3.0.55

Linux Linux Kernel=3.0.56

Linux Linux Kernel=3.0.57

Linux Linux Kernel=3.0.58

Linux Linux Kernel=3.0.59

Linux Linux Kernel=3.0.60

Linux Linux Kernel=3.0.61

Linux Linux Kernel=3.0.62

Linux Linux Kernel=3.0.63

Linux Linux Kernel=3.0.64

Linux Linux Kernel=3.0.65

Linux Linux Kernel=3.0.66

Linux Linux Kernel=3.0.67

Linux Linux Kernel=3.0.68

Linux Linux Kernel=3.1

Linux Linux Kernel=3.1-rc1

Linux Linux Kernel=3.1-rc2

Linux Linux Kernel=3.1-rc3

Linux Linux Kernel=3.1-rc4

Linux Linux Kernel=3.1.1

Linux Linux Kernel=3.1.2

Linux Linux Kernel=3.1.3

Linux Linux Kernel=3.1.4

Linux Linux Kernel=3.1.5

Linux Linux Kernel=3.1.6

Linux Linux Kernel=3.1.7

Linux Linux Kernel=3.1.8

Linux Linux Kernel=3.1.9

Linux Linux Kernel=3.1.10

Linux Linux Kernel=3.2

Linux Linux Kernel=3.2-rc2

Linux Linux Kernel=3.2-rc3

Linux Linux Kernel=3.2-rc4

Linux Linux Kernel=3.2-rc5

Linux Linux Kernel=3.2-rc6

Linux Linux Kernel=3.2-rc7

Linux Linux Kernel=3.2.1

Linux Linux Kernel=3.2.2

Linux Linux Kernel=3.2.3

Linux Linux Kernel=3.2.4

Linux Linux Kernel=3.2.5

Linux Linux Kernel=3.2.6

Linux Linux Kernel=3.2.7

Linux Linux Kernel=3.2.8

Linux Linux Kernel=3.2.9

Linux Linux Kernel=3.2.10

Linux Linux Kernel=3.2.11

Linux Linux Kernel=3.2.12

Linux Linux Kernel=3.2.13

Linux Linux Kernel=3.2.14

Linux Linux Kernel=3.2.15

Linux Linux Kernel=3.2.16

Linux Linux Kernel=3.2.17

Linux Linux Kernel=3.2.18

Linux Linux Kernel=3.2.19

Linux Linux Kernel=3.2.20

Linux Linux Kernel=3.2.21

Linux Linux Kernel=3.2.22

Linux Linux Kernel=3.2.23

Linux Linux Kernel=3.2.24

Linux Linux Kernel=3.2.25

Linux Linux Kernel=3.2.26

Linux Linux Kernel=3.2.27

Linux Linux Kernel=3.2.28

Linux Linux Kernel=3.2.29

Linux Linux Kernel=3.2.30

Linux Linux Kernel=3.3

Linux Linux Kernel=3.3-rc1

Linux Linux Kernel=3.3-rc2

Linux Linux Kernel=3.3-rc3

Linux Linux Kernel=3.3-rc4

Linux Linux Kernel=3.3-rc5

Linux Linux Kernel=3.3-rc6

Linux Linux Kernel=3.3-rc7

Linux Linux Kernel=3.3.1

Linux Linux Kernel=3.3.2

Linux Linux Kernel=3.3.3

Linux Linux Kernel=3.3.4

Linux Linux Kernel=3.3.5

Linux Linux Kernel=3.3.6

Linux Linux Kernel=3.3.7

Linux Linux Kernel=3.3.8

Linux Linux Kernel=3.4

Linux Linux Kernel=3.4-rc1

Linux Linux Kernel=3.4-rc2

Linux Linux Kernel=3.4-rc3

Linux Linux Kernel=3.4-rc4

Linux Linux Kernel=3.4-rc5

Linux Linux Kernel=3.4-rc6

Linux Linux Kernel=3.4-rc7

Linux Linux Kernel=3.4.1

Linux Linux Kernel=3.4.2

Linux Linux Kernel=3.4.3

Linux Linux Kernel=3.4.4

Linux Linux Kernel=3.4.5

Linux Linux Kernel=3.4.6

Linux Linux Kernel=3.4.7

Linux Linux Kernel=3.4.8

Linux Linux Kernel=3.4.10

Linux Linux Kernel=3.4.11

Linux Linux Kernel=3.4.12

Linux Linux Kernel=3.4.13

Linux Linux Kernel=3.4.14

Linux Linux Kernel=3.4.15

Linux Linux Kernel=3.4.16

Linux Linux Kernel=3.4.17

Linux Linux Kernel=3.4.18

Linux Linux Kernel=3.4.19

Linux Linux Kernel=3.4.20

Linux Linux Kernel=3.4.21

Linux Linux Kernel=3.4.22

Linux Linux Kernel=3.4.23

Linux Linux Kernel=3.4.24

Linux Linux Kernel=3.4.25

Linux Linux Kernel=3.4.26

Linux Linux Kernel=3.4.27

Linux Linux Kernel=3.4.28

Linux Linux Kernel=3.4.29

Linux Linux Kernel=3.4.30

Linux Linux Kernel=3.4.31

Linux Linux Kernel=3.4.32

Linux Linux Kernel=3.4.33

Linux Linux Kernel=3.4.34

Linux Linux Kernel=3.4.35

Linux Linux Kernel=3.4.36

Linux Linux Kernel=3.4.37

Linux Linux Kernel=3.4.38

Linux Linux Kernel=3.4.39

Linux Linux Kernel=3.4.40

Linux Linux Kernel=3.4.41

Linux Linux Kernel=3.4.42

Linux Linux Kernel=3.4.43

Linux Linux Kernel=3.4.44

Linux Linux Kernel=3.4.45

Linux Linux Kernel=3.4.46

Linux Linux Kernel=3.4.47

Linux Linux Kernel=3.4.48

Linux Linux Kernel=3.4.49

Linux Linux Kernel=3.4.50

Linux Linux Kernel=3.4.51

Linux Linux Kernel=3.4.52

Linux Linux Kernel=3.4.53

Linux Linux Kernel=3.4.54

Linux Linux Kernel=3.4.55

Linux Linux Kernel=3.4.56

Linux Linux Kernel=3.4.57

Linux Linux Kernel=3.4.58

Linux Linux Kernel=3.4.59

Linux Linux Kernel=3.4.60

Linux Linux Kernel=3.4.61

Linux Linux Kernel=3.4.62

Linux Linux Kernel=3.4.63

Linux Linux Kernel=3.4.64

Linux Linux Kernel=3.4.65

Linux Linux Kernel=3.4.66

Linux Linux Kernel=3.4.67

Linux Linux Kernel=3.4.68

Linux Linux Kernel=3.4.69

Linux Linux Kernel=3.4.70

Linux Linux Kernel=3.4.71

Linux Linux Kernel=3.4.72

Linux Linux Kernel=3.4.73

Linux Linux Kernel=3.4.74

Linux Linux Kernel=3.4.75

Linux Linux Kernel=3.4.76

Linux Linux Kernel=3.4.77

Linux Linux Kernel=3.4.78

Linux Linux Kernel=3.4.79

debian/linux

5.10.223-15.10.234-16.1.129-16.1.135-16.12.25-16.12.27-1

Remediation

Patch Available

https://git.kernel.org/linus/52400ba946759af28442dee6265c5c0180ac7122

Patch Available

https://git.kernel.org/linus/6f7b0a2a5c0fb03be7c25bd1745baa50582348ef

Event History

May 14, 2014

Data Sourced

via Red Hat·12:48 PM

DescriptionSeverityAffected Software

May 26, 2014

CVE Published

via MITRE·10:00 PM

Data Sourced

via MITRE·10:00 PM

Description

Data Sourced

via NVD·10:55 PM

DescriptionSeverityWeaknessAffected Software

Jan 11, 2024

Data Sourced

via Launchpad·09:59 PM

Description

Sep 16, 2024

Data Sourced

via Ubuntu·12:50 AM

RemedyDescriptionSeverityAffected Software

Frequently Asked Questions

What is the severity of CVE-2012-6647?

The severity of CVE-2012-6647 is classified as high due to potential system crashes caused by a NULL pointer dereference.

How do I fix CVE-2012-6647?

To fix CVE-2012-6647, update the Linux kernel to version 5.10.223-1 or later.

What systems are affected by CVE-2012-6647?

CVE-2012-6647 affects Linux kernels with versions up to and including 3.4.9.

Can CVE-2012-6647 be exploited remotely?

Exploitation of CVE-2012-6647 typically requires local access to the affected system.

What are the implications of CVE-2012-6647 in a production environment?

CVE-2012-6647 can lead to denial of service attacks, making systems unstable and potentially causing crashes in production environments.

CVE-2012-6647: Null Pointer Dereference

Other sources

Affected Software

Remediation

Patch Available

Patch Available

Event History

Frequently Asked Questions

What is the severity of CVE-2012-6647?

How do I fix CVE-2012-6647?

What systems are affected by CVE-2012-6647?

Can CVE-2012-6647 be exploited remotely?

What are the implications of CVE-2012-6647 in a production environment?

Company

Resources

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