CVE-2009-4307

Severity

71%

Complexity

86%

Confidentiality

115%

The ext4_fill_flex_info function in fs/ext4/super.c in the Linux kernel before 2.6.32-git6 allows user-assisted remote attackers to cause a denial of service (divide-by-zero error and panic) via a malformed ext4 filesystem containing a super block with a large FLEX_BG group size (aka s_log_groups_per_flex value).

The ext4_fill_flex_info function in fs/ext4/super.c in the Linux kernel before 2.6.32-git6 allows user-assisted remote attackers to cause a denial of service (divide-by-zero error and panic) via a malformed ext4 filesystem containing a super block with a large FLEX_BG group size (aka s_log_groups_per_flex value).

CVSS 2.0 Base Score 7.1. CVSS Attack Vector: network. CVSS Attack Complexity: medium. CVSS Vector: (AV:N/AC:M/Au:N/C:N/I:N/A:C).

Overview

First reported 15 years ago

2009-12-13 01:30:00

Last updated 7 years ago

2017-09-19 01:29:00

Affected Software

Linux Kernel 2.6.0

2.6.0

Linux Kernel 2.6.1

2.6.1

Linux Kernel 2.6.2

2.6.2

Linux Kernel 2.6.3

2.6.3

Linux Kernel 2.6.4

2.6.4

Linux Kernel 2.6.5

2.6.5

Linux Kernel 2.6.6

2.6.6

Linux Kernel 2.6.7

2.6.7

Linux Kernel 2.6.8

2.6.8

Linux Kernel 2.6.8.1

2.6.8.1

Linux Kernel 2.6.9

2.6.9

Linux Kernel 2.6.10

2.6.10

Linux Kernel 2.6.11

2.6.11

Linux Kernel 2.6.11.1

2.6.11.1

Linux Kernel 2.6.11.2

2.6.11.2

Linux Kernel 2.6.11.3

2.6.11.3

Linux Kernel 2.6.11.4

2.6.11.4

Linux Kernel 2.6.11.5

2.6.11.5

Linux Kernel 2.6.11.6

2.6.11.6

Linux Kernel 2.6.11.7

2.6.11.7

Linux Kernel 2.6.11.8

2.6.11.8

Linux Kernel 2.6.11.9

2.6.11.9

Linux Kernel 2.6.11.10

2.6.11.10

Linux Kernel 2.6.11.11

2.6.11.11

Linux Kernel 2.6.11.12

2.6.11.12

Linux Kernel 2.6.12

2.6.12

Linux Kernel 2.6.12.1

2.6.12.1

Linux Kernel 2.6.12.2

2.6.12.2

Linux Kernel 2.6.12.3

2.6.12.3

Linux Kernel 2.6.12.4

2.6.12.4

Linux Kernel 2.6.12.5

2.6.12.5

Linux Kernel 2.6.12.6

2.6.12.6

Linux Kernel 2.6.13

2.6.13

Linux Kernel 2.6.13.1

2.6.13.1

Linux Kernel 2.6.13.2

2.6.13.2

Linux Kernel 2.6.13.3

2.6.13.3

Linux Kernel 2.6.13.4

2.6.13.4

Linux Kernel 2.6.13.5

2.6.13.5

Linux Kernel 2.6.14

2.6.14

Linux Kernel 2.6.14.1

2.6.14.1

Linux Kernel 2.6.14.2

2.6.14.2

Linux Kernel 2.6.14.3

2.6.14.3

Linux Kernel 2.6.14.4

2.6.14.4

Linux Kernel 2.6.14.5

2.6.14.5

Linux Kernel 2.6.14.6

2.6.14.6

Linux Kernel 2.6.14.7

2.6.14.7

Linux Kernel 2.6.15

2.6.15

Linux Kernel 2.6.15.1

2.6.15.1

Linux Kernel 2.6.15.2

2.6.15.2

Linux Kernel 2.6.15.3

2.6.15.3

Linux Kernel 2.6.15.4

2.6.15.4

Linux Kernel 2.6.15.5

2.6.15.5

Linux Kernel 2.6.15.6

2.6.15.6

Linux Kernel 2.6.15.7

2.6.15.7

Linux Kernel 2.6.16

2.6.16

Linux Kernel 2.6.16.1

2.6.16.1

Linux Kernel 2.6.16.2

2.6.16.2

Linux Kernel 2.6.16.3

2.6.16.3

Linux Kernel 2.6.16.4

2.6.16.4

Linux Kernel 2.6.16.5

2.6.16.5

Linux Kernel 2.6.16.6

2.6.16.6

Linux Kernel 2.6.16.7

2.6.16.7

Linux Kernel 2.6.16.8

2.6.16.8

Linux Kernel 2.6.16.9

2.6.16.9

Linux Kernel 2.6.16.10

2.6.16.10

Linux Kernel 2.6.16.11

2.6.16.11

Linux Kernel 2.6.16.12

2.6.16.12

Linux Kernel 2.6.16.13

2.6.16.13

Linux Kernel 2.6.16.14

2.6.16.14

Linux Kernel 2.6.16.15

2.6.16.15

Linux Kernel 2.6.16.16

2.6.16.16

Linux Kernel 2.6.16.17

2.6.16.17

Linux Kernel 2.6.16.18

2.6.16.18

Linux Kernel 2.6.16.19

2.6.16.19

Linux Kernel 2.6.16.20

2.6.16.20

Linux Kernel 2.6.16.21

2.6.16.21

Linux Kernel 2.6.16.22

2.6.16.22

Linux Kernel 2.6.16.23

2.6.16.23

Linux Kernel 2.6.16.24

2.6.16.24

Linux Kernel 2.6.16.25

2.6.16.25

Linux Kernel 2.6.16.26

2.6.16.26

Linux Kernel 2.6.16.27

2.6.16.27

Linux Kernel 2.6.16.28

2.6.16.28

Linux Kernel 2.6.16.29

2.6.16.29

Linux Kernel 2.6.16.30

2.6.16.30

Linux Kernel 2.6.16.31

2.6.16.31

Linux Kernel 2.6.16.32

2.6.16.32

Linux Kernel 2.6.16.33

2.6.16.33

Linux Kernel 2.6.16.34

2.6.16.34

Linux Kernel 2.6.16.35

2.6.16.35

Linux Kernel 2.6.16.36

2.6.16.36

Linux Kernel 2.6.16.37

2.6.16.37

Linux Kernel 2.6.16.38

2.6.16.38

Linux Kernel 2.6.16.39

2.6.16.39

Linux Kernel 2.6.16.40

2.6.16.40

Linux Kernel 2.6.16.41

2.6.16.41

Linux Kernel 2.6.16.42

2.6.16.42

Linux Kernel 2.6.16.43

2.6.16.43

Linux Kernel 2.6.16.44

2.6.16.44

Linux Kernel 2.6.16.45

2.6.16.45

Linux Kernel 2.6.16.46

2.6.16.46

Linux Kernel 2.6.16.47

2.6.16.47

Linux Kernel 2.6.16.48

2.6.16.48

Linux Kernel 2.6.16.49

2.6.16.49

Linux Kernel 2.6.16.50

2.6.16.50

Linux Kernel 2.6.16.51

2.6.16.51

Linux Kernel 2.6.16.52

2.6.16.52

Linux Kernel 2.6.16.53

2.6.16.53

Linux Kernel 2.6.16.54

2.6.16.54

Linux Kernel 2.16.55

2.6.16.55

Linux Kernel 2.6.16.56

2.6.16.56

Linux Kernel 2.6.16.57

2.6.16.57

Linux Kernel 2.6.16.58

2.6.16.58

Linux Kernel 2.6.16.59

2.6.16.59

Linux Kernel 2.6.16.60

2.6.16.60

Linux Kernel 2.6.16.61

2.6.16.61

Linux Kernel 2.6.16.62

2.6.16.62

Linux Kernel 2.6.17

2.6.17

Linux Kernel 2.6.17.1

2.6.17.1

Linux Kernel 2.6.17.2

2.6.17.2

Linux Kernel 2.6.17.3

2.6.17.3

Linux Kernel 2.6.17.4

2.6.17.4

Linux Kernel 2.6.17.5

2.6.17.5

Linux Kernel 2.6.17.6

2.6.17.6

Linux Kernel 2.6.17.7

2.6.17.7

Linux Kernel 2.6.17.8

2.6.17.8

Linux Kernel 2.6.17.9

2.6.17.9

Linux Kernel 2.6.17.10

2.6.17.10

Linux Kernel 2.6.17.11

2.6.17.11

Linux Kernel 2.6.17.12

2.6.17.12

Linux Kernel 2.6.17.13

2.6.17.13

Linux Kernel 2.6.17.14

2.6.17.14

Linux Kernel 2.6.18

2.6.18

Linux Kernel 2.6.18.1

2.6.18.1

Linux Kernel 2.6.18.2

2.6.18.2

Linux Kernel 2.6.18.3

2.6.18.3

Linux Kernel 2.6.18.4

2.6.18.4

Linux Kernel 2.6.18.5

2.6.18.5

Linux Kernel 2.6.18.6

2.6.18.6

Linux Kernel 2.6.18.7

2.6.18.7

Linux Kernel 2.6.18.8

2.6.18.8

Linux Kernel 2.6.19

2.6.19

Linux Kernel 2.6.19.1

2.6.19.1

Linux Kernel 2.6.19.2

2.6.19.2

Linux Kernel 2.6.19.3

2.6.19.3

Linux Kernel 2.6.19.4

2.6.19.4

Linux Kernel 2.6.19.5

2.6.19.5

Linux Kernel 2.6.19.6

2.6.19.6

Linux Kernel 2.6.19.7

2.6.19.7

Linux Kernel 2.6.20

2.6.20

Linux Kernel 2.6.20.1

2.6.20.1

Linux Kernel 2.6.20.2

2.6.20.2

Linux Kernel 2.6.20.3

2.6.20.3

Linux Kernel 2.6.20.4

2.6.20.4

Linux Kernel 2.6.20.5

2.6.20.5

Linux Kernel 2.6.20.6

2.6.20.6

Linux Kernel 2.6.20.7

2.6.20.7

Linux Kernel 2.6.20.8

2.6.20.8

Linux Kernel 2.6.20.9

2.6.20.9

Linux Kernel 2.6.20.10

2.6.20.10

Linux Kernel 2.6.20.11

2.6.20.11

Linux Kernel 2.6.20.12

2.6.20.12

Linux Kernel 2.6.20.13

2.6.20.13

Linux Kernel 2.6.20.14

2.6.20.14

Linux Kernel 2.6.20.15

2.6.20.15

Linux Kernel 2.6.20.16

2.6.20.16

Linux Kernel 2.6.20.17

2.6.20.17

Linux Kernel 2.6.20.18

2.6.20.18

Linux Kernel 2.6.20.19

2.6.20.19

Linux Kernel 2.6.20.20

2.6.20.20

Linux Kernel 2.6.20.21

2.6.20.21

Linux Kernel 2.6.21

2.6.21

Linux Kernel 2.6.21.1

2.6.21.1

Linux Kernel 2.6.21.2

2.6.21.2

Linux Kernel 2.6.21.3

2.6.21.3

Linux Kernel 2.6.21.4

2.6.21.4

Linux Kernel 2.6.21.5

2.6.21.5

Linux Kernel 2.6.21.6

2.6.21.6

Linux Kernel 2.6.21.7

2.6.21.7

Linux Kernel 2.6.22

2.6.22

Linux Kernel 2.6.22.1

2.6.22.1

Linux Kernel 2.6.22.2

2.6.22.2

Linux Kernel 2.6.22.3

2.6.22.3

Linux Kernel 2.6.22.4

2.6.22.4

Linux Kernel 2.6.22.5

2.6.22.5

Linux Kernel 2.6.22.6

2.6.22.6

Linux Kernel 2.6.22.7

2.6.22.7

Linux Kernel 2.6.22.8

2.6.22.8

Linux Kernel 2.6.22.9

2.6.22.9

Linux Kernel 2.6.22.10

2.6.22.10

Linux Kernel 2.6.22.11

2.6.22.11

Linux Kernel 2.6.22.12

2.6.22.12

Linux Kernel 2.6.22.13

2.6.22.13

Linux Kernel 2.6.22.14

2.6.22.14

Linux Kernel 2.6.22.15

2.6.22.15

Linux Kernel 2.6.22.16

2.6.22.16

Linux Kernel 2.6.22.17

2.6.22.17

Linux Kernel 2.6.22.18

2.6.22.18

Linux Kernel 2.6.22.19

2.6.22.19

Linux Kernel 2.6.23

2.6.23

Linux Kernel 2.6.23.1

2.6.23.1

Linux Kernel 2.6.23.2

2.6.23.2

Linux Kernel 2.6.23.3

2.6.23.3

Linux Kernel 2.6.23.4

2.6.23.4

Linux Kernel 2.6.23.5

2.6.23.5

Linux Kernel 2.6.23.6

2.6.23.6

Linux Kernel 2.6.23.7

2.6.23.7

Linux Kernel 2.6.23.8

2.6.23.8

Linux Kernel 2.6.23.9

2.6.23.9

Linux Kernel 2.6.23.10

2.6.23.10

Linux Kernel 2.6.23.11

2.6.23.11

Linux Kernel 2.6.23.12

2.6.23.12

Linux Kernel 2.6.23.13

2.6.23.13

Linux Kernel 2.6.23.14

2.6.23.14

Linux Kernel 2.6.23.16

2.6.23.15

Linux Kernel 2.6.23.16

2.6.23.16

Linux Kernel 2.6.23.17

2.6.23.17

Linux Kernel 2.6.24

2.6.24

Linux Kernel 2.6.24.1

2.6.24.1

Linux Kernel 2.6.24.2

2.6.24.2

Linux Kernel 2.6.24.3

2.6.24.3

Linux Kernel 2.6.24.4

2.6.24.4

Linux Kernel 2.6.24.5

2.6.24.5

Linux Kernel 2.6.24.6

2.6.24.6

Linux Kernel 2.6.24.7

2.6.24.7

Linux Kernel 2.6.25

2.6.25

Linux Kernel 2.6.25.1

2.6.25.1

Linux Kernel 2.6.25.2

2.6.25.2

Linux Kernel 2.6.25.3

2.6.25.3

Linux Kernel 2.6.25.4

2.6.25.4

Linux Kernel 2.6.25.5

2.6.25.5

Linux Kernel 2.6.25.6

2.6.25.6

Linux Kernel 2.6.25.7

2.6.25.7

Linux Kernel 2.6.25.8

2.6.25.8

Linux Kernel 2.6.25.9

2.6.25.9

Linux Kernel 2.6.25.10

2.6.25.10

Linux Kernel 2.6.25.11

2.6.25.11

Linux Kernel 2.6.25.12

2.6.25.12

Linux Kernel 2.6.25.13

2.6.25.13

Linux Kernel 2.6.25.14

2.6.25.14

Linux Kernel 2.6.25.15

2.6.25.15

Linux Kernel 2.6.25.16

2.6.25.16

Linux Kernel 2.6.25.17

2.6.25.17

Linux Kernel 2.6.25.18

2.6.25.18

Linux Kernel 2.6.25.19

2.6.25.19

Linux Kernel 2.6.25.20

2.6.25.20

Linux Kernel 2.6.26

2.6.26

Linux Kernel 2.6.26.1

2.6.26.1

Linux Kernel 2.6.26.2

2.6.26.2

Linux Kernel 2.6.26.3

2.6.26.3

Linux Kernel 2.6.26.4

2.6.26.4

Linux Kernel 2.6.26.5

2.6.26.5

Linux Kernel 2.6.26.6

2.6.26.6

Linux Kernel 2.6.26.7

2.6.26.7

Linux Kernel 2.6.26.8

2.6.26.8

Linux Kernel 2.6.27

2.6.27

Linux Kernel 2.6.27.1

2.6.27.1

Linux Kernel 2.6.27.2

2.6.27.2

Linux Kernel 2.6.27.3

2.6.27.3

Linux Kernel 2.6.27.4

2.6.27.4

Linux Kernel 2.6.27.5

2.6.27.5

Linux Kernel 2.6.27.6

2.6.27.6

Linux Kernel 2.6.27.7

2.6.27.7

Linux Kernel 2.6.27.8

2.6.27.8

Linux Kernel 2.6.27.9

2.6.27.9

Linux Kernel 2.6.27.10

2.6.27.10

Linux Kernel 2.6.27.11

2.6.27.11

Linux Kernel 2.6.27.12

2.6.27.12

Linux Kernel 2.6.27.13

2.6.27.13

Linux Kernel 2.6.27.14

2.6.27.14

Linux Kernel 2.6.27.15

2.6.27.15

Linux Kernel 2.6.27.16

2.6.27.16

Linux Kernel 2.6.27.17

2.6.27.17

Linux Kernel 2.6.27.18

2.6.27.18

Linux Kernel 2.6.27.19

2.6.27.19

Linux Kernel 2.6.27.20

2.6.27.20

Linux Kernel 2.6.27.21

2.6.27.21

Linux Kernel 2.6.27.22

2.6.27.22

Linux Kernel 2.6.27.23

2.6.27.23

Linux Kernel 2.6.27.24

2.6.27.24

Linux Kernel 2.6.27.25

2.6.27.25

Linux Kernel 2.6.27.26

2.6.27.26

Linux Kernel 2.6.27.27

2.6.27.27

Linux Kernel 2.6.27.28

2.6.27.28

Linux Kernel 2.6.27.29

2.6.27.29

Linux Kernel 2.6.27.30

2.6.27.30

Linux Kernel 2.6.27.31

2.6.27.31

Linux Kernel 2.6.28

2.6.28

Linux Kernel 2.6.28.1

2.6.28.1

Linux Kernel 2.6.28.2

2.6.28.2

Linux Kernel 2.6.28.3

2.6.28.3

Linux Kernel 2.6.28.4

2.6.28.4

Linux Kernel 2.6.28.5

2.6.28.5

Linux Kernel 2.6.28.6

2.6.28.6

Linux Kernel 2.6.28.7

2.6.28.7

Linux Kernel 2.6.28.8

2.6.28.8

Linux Kernel 2.6.28.9

2.6.28.9

Linux Kernel 2.6.28.10

2.6.28.10

Linux Kernel 2.6.29

2.6.29

Linux Kernel 2.6.29.1

2.6.29.1

Linux Kernel 2.6.29.2

2.6.29.2

Linux Kernel 2.6.29.3

2.6.29.3

Linux Kernel 2.6.29.4

2.6.29.4

Linux Kernel 2.6.29.5

2.6.29.5

Linux Kernel 2.6.29.6

2.6.29.6

Linux Kernel 2.6.30

2.6.30

Linux Kernel 2.6.30.1

2.6.30.1

Linux Kernel 2.6.30.2

2.6.30.2

Linux Kernel 2.6.30.3

2.6.30.3

Linux Kernel 2.6.30.4

2.6.30.4

Linux Kernel 2.6.30.5

2.6.30.5

Linux Kernel 2.6.30.6

2.6.30.6

Linux Kernel 2.6.30.7

2.6.30.7

Linux Kernel 2.6.30.8

2.6.30.8

Linux Kernel 2.6.30.9

2.6.30.9

Linux Kernel 2.6.31

2.6.31

Linux Kernel 2.6.31 Release Candidate 1

2.6.31

Linux Kernel 2.6.31 Release Candidate 2

2.6.31

Linux Kernel 2.6.31 Release Candidate 3

2.6.31

Linux Kernel 2.6.31 Release Candidate 4

2.6.31

Linux Kernel 2.6.31 Release Candidate 5

2.6.31

Linux Kernel 2.6.31 Release Candidate 6

2.6.31

linux Kernel 2.6.31 Release Candidate 7

2.6.31

linux Kernel 2.6.31 Release Candidate 8

2.6.31

Linux Kernel 2.6.31.1

2.6.31.1

Linux Kernel 2.6.31.2

2.6.31.2

Linux Kernel 2.6.31.3

2.6.31.3

Linux Kernel 2.6.31.4

2.6.31.4

Linux Kernel 2.6.31.5

2.6.31.5

Linux Kernel 2.6.31.6

2.6.31.6

Linux Kernel

References

http://bugzilla.kernel.org/show_bug.cgi?id=14287

Exploit, Patch

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=503358ae01b70ce6909d19dd01287093f6b6271c

SUSE-SA:2010:001

SUSE-SA:2010:005

[linux-kernel] 20091209 [GIT PULL] ext4 updates for v2.6.33

37658

Vendor Advisory

38017

38276

http://www.kernel.org/pub/linux/kernel/v2.6/snapshots/patch-2.6.32-git6.log

Patch

MDVSA-2011:029

RHSA-2010:0380

oval:org.mitre.oval:def:9874

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