Linux Kernel 'ext4_convert_unwritten_exten()' Function Local Information Disclosure Vulnerability

BID:56238

Info

Linux Kernel 'ext4_convert_unwritten_exten()' Function Local Information Disclosure Vulnerability

Bugtraq ID: 56238
Class: Design Error
CVE: CVE-2012-4508
Remote: No
Local: Yes
Published: Oct 25 2012 12:00AM
Updated: May 07 2015 05:16PM
Credit: Dmitry Monakhov
Vulnerable: Ubuntu Ubuntu Linux 12.04 LTS i386
Ubuntu Ubuntu Linux 12.04 LTS amd64
Ubuntu Ubuntu Linux 11.10 i386
Ubuntu Ubuntu Linux 11.10 amd64
Ubuntu Ubuntu Linux 10.04 sparc
Ubuntu Ubuntu Linux 10.04 powerpc
Ubuntu Ubuntu Linux 10.04 i386
Ubuntu Ubuntu Linux 10.04 ARM
Ubuntu Ubuntu Linux 10.04 amd64
Red Hat MRG Realtime for RHEL 6 Server 2
Red Hat Enterprise Linux Workstation Optional 6
Red Hat Enterprise Linux Workstation 6
Red Hat Enterprise Linux Server Optional 6
Red Hat Enterprise Linux Server 6
Red Hat Enterprise Linux HPC Node Optional 6
Red Hat Enterprise Linux HPC Node 6
Red Hat Enterprise Linux Desktop Optional 6
Red Hat Enterprise Linux Desktop 6
Red Hat Enterprise Linux Desktop 5 client
Red Hat Enterprise Linux 5 Server
Oracle Enterprise Linux 6.2
Oracle Enterprise Linux 6
Oracle Enterprise Linux 5
OpenVZ Project OpenVZ 042stab055.10
OpenVZ Project OpenVZ 042stab053.5
OpenVZ Project OpenVZ 042stab049.6
OpenVZ Project OpenVZ 042stab044.17
OpenVZ Project OpenVZ 042stab044.11
OpenVZ Project OpenVZ 042stab039.10
OpenVZ Project OpenVZ 042stab037.1
OpenVZ Project OpenVZ 028stab098.1
OpenVZ Project OpenVZ 028stab095.1
OpenVZ Project OpenVZ 028stab092.2
OpenVZ Project OpenVZ 028stab091.1
OpenVZ Project OpenVZ 028stab089.1
OpenVZ Project OpenVZ 028stab085.2
OpenVZ Project OpenVZ 028stab081.1
Linux kernel 2.5.69
Linux kernel 2.5.68
Linux kernel 2.5.67
Linux kernel 2.5.66
Linux kernel 2.5.65
Linux kernel 2.5.64
Linux kernel 2.5.63
Linux kernel 2.5.62
Linux kernel 2.5.61
Linux kernel 2.5.60
Linux kernel 2.5.59
Linux kernel 2.5.58
Linux kernel 2.5.57
Linux kernel 2.5.56
Linux kernel 2.5.55
Linux kernel 2.5.54
Linux kernel 2.5.53
Linux kernel 2.5.52
Linux kernel 2.5.51
Linux kernel 2.5.50
Linux kernel 2.5.49
Linux kernel 2.5.48
Linux kernel 2.5.47
Linux kernel 2.5.46
Linux kernel 2.5.45
Linux kernel 2.5.44
Linux kernel 2.5.43
Linux kernel 2.5.42
Linux kernel 2.5.41
Linux kernel 2.5.40
Linux kernel 2.5.39
Linux kernel 2.5.38
Linux kernel 2.5.37
Linux kernel 2.5.36
Linux kernel 2.5.35
Linux kernel 2.5.34
Linux kernel 2.5.33
Linux kernel 2.5.32
Linux kernel 2.5.31
Linux kernel 2.5.30
Linux kernel 2.5.29
Linux kernel 2.5.28
Linux kernel 2.5.27
Linux kernel 2.5.26
Linux kernel 2.5.25
Linux kernel 2.5.24
Linux kernel 2.5.23
Linux kernel 2.5.22
Linux kernel 2.5.21
Linux kernel 2.5.20
Linux kernel 2.5.19
Linux kernel 2.5.18
Linux kernel 2.5.17
Linux kernel 2.5.16
Linux kernel 2.5.15
Linux kernel 2.5.14
Linux kernel 2.5.13
Linux kernel 2.5.12
Linux kernel 2.5.11
Linux kernel 2.5.10
Linux kernel 2.5.9
Linux kernel 2.5.8
Linux kernel 2.5.7
Linux kernel 2.5.6
Linux kernel 2.5.5
Linux kernel 2.5.4
Linux kernel 2.5.3
Linux kernel 2.5.2
Linux kernel 2.5.1
Linux kernel 2.5 .0
Linux kernel 2.4.37 1
Linux kernel 2.4.37 .9
Linux kernel 2.4.37 .8
Linux kernel 2.4.37 .7
Linux kernel 2.4.37 .6
Linux kernel 2.4.37 .5
Linux kernel 2.4.37 -rc1
Linux kernel 2.4.37
Linux kernel 2.4.36 .8
Linux kernel 2.4.36 .7
Linux kernel 2.4.36 .5
Linux kernel 2.4.36 .4
Linux kernel 2.4.36 .1
Linux kernel 2.4.36
Linux kernel 2.4.35 .3
Linux kernel 2.4.35 .2
Linux kernel 2.4.35
Linux kernel 2.4.34 rc3
Linux kernel 2.4.34 .2
Linux kernel 2.4.34 .1
Linux kernel 2.4.34
Linux kernel 2.4.33 2
Linux kernel 2.4.33 .7
Linux kernel 2.4.33 .6
Linux kernel 2.4.33 .6
Linux kernel 2.4.33 .3
Linux kernel 2.4.33 .3
Linux kernel 2.4.33 .1
Linux kernel 2.4.33 -pre1
Linux kernel 2.4.33
Linux kernel 2.4.32 -pre2
Linux kernel 2.4.32 -pre1
Linux kernel 2.4.32
Linux kernel 2.4.31 -pre1
Linux kernel 2.4.31
Linux kernel 2.4.30 rc3
Linux kernel 2.4.30 rc2
Linux kernel 2.4.30
Linux kernel 2.4.29 -rc2
Linux kernel 2.4.29 -rc1
Linux kernel 2.4.29
Linux kernel 2.4.28
Linux kernel 2.4.27 -pre5
Linux kernel 2.4.27 -pre4
Linux kernel 2.4.27 -pre3
Linux kernel 2.4.27 -pre2
Linux kernel 2.4.27 -pre1
Linux kernel 2.4.27
Linux kernel 2.4.26
Linux kernel 2.4.25
Linux kernel 2.4.24 -ow1
Linux kernel 2.4.24
Linux kernel 2.4.23 -pre9
Linux kernel 2.4.23 -ow2
Linux kernel 2.4.23
Linux kernel 2.4.22 -pre10
Linux kernel 2.4.22
Linux kernel 2.4.21 pre7
Linux kernel 2.4.21 pre4
Linux kernel 2.4.21 pre1
Linux kernel 2.4.21
+ Conectiva Linux 9.0
+ Mandriva Linux Mandrake 9.1 ppc
 + Mandriva Linux Mandrake 9.1
+ Red Hat Enterprise Linux AS 3
 + RedHat Desktop 3.0
+ RedHat Enterprise Linux ES 3
 + RedHat Enterprise Linux WS 3
 + S.u.S.E. Linux Personal 9.0 x86_64
 + S.u.S.E. Linux Personal 9.0
+ SuSE SUSE Linux Enterprise Server 8
 Linux kernel 2.4.20
Linux kernel 2.4.19 -pre6
Linux kernel 2.4.19 -pre5
Linux kernel 2.4.19 -pre4
Linux kernel 2.4.19 -pre3
Linux kernel 2.4.19 -pre2
Linux kernel 2.4.19 -pre1
Linux kernel 2.4.19
Linux kernel 2.4.18 pre-9
Linux kernel 2.4.18 pre-8
Linux kernel 2.4.18 pre-7
Linux kernel 2.4.18 pre-6
Linux kernel 2.4.18 pre-5
Linux kernel 2.4.18 pre-4
Linux kernel 2.4.18 pre-3
Linux kernel 2.4.18 pre-2
Linux kernel 2.4.18 pre-1
Linux kernel 2.4.18 x86
Linux kernel 2.4.18
Linux kernel 2.4.17
Linux kernel 2.4.16
Linux kernel 2.4.15
Linux kernel 2.4.14
Linux kernel 2.4.13
Linux kernel 2.4.12
+ Conectiva Linux 7.0
Linux kernel 2.4.11 pre-3
Linux kernel 2.4.11
Linux kernel 2.4.10
Linux kernel 2.4.9
Linux kernel 2.4.8
Linux kernel 2.4.7
Linux kernel 2.4.6
Linux kernel 2.4.5
+ Slackware Linux 8.0
Linux kernel 2.4.4
Linux kernel 2.4.3 -pre3
Linux kernel 2.4.3
Linux kernel 2.4.2
Linux kernel 2.4.1
Linux kernel 2.4 .0-test9
Linux kernel 2.4 .0-test8
Linux kernel 2.4 .0-test7
Linux kernel 2.4 .0-test6
Linux kernel 2.4 .0-test5
Linux kernel 2.4 .0-test4
Linux kernel 2.4 .0-test3
Linux kernel 2.4 .0-test2
Linux kernel 2.4 .0-test12
Linux kernel 2.4 .0-test11
Linux kernel 2.4 .0-test10
Linux kernel 2.4 .0-test1
Linux kernel 2.4
Linux kernel 2.3.99 -pre9
Linux kernel 2.3.99 -pre8
Linux kernel 2.3.99 -pre7
Linux kernel 2.3.99 -pre6
Linux kernel 2.3.99 -pre5
Linux kernel 2.3.99 -pre4
Linux kernel 2.3.99 -pre3
Linux kernel 2.3.99 -pre2
Linux kernel 2.3.99 -pre1
Linux kernel 2.3.99
Linux kernel 2.3.51
Linux kernel 2.3.50
Linux kernel 2.3.49
Linux kernel 2.3.48
Linux kernel 2.3.47
Linux kernel 2.3.46
Linux kernel 2.3.45
Linux kernel 2.3.44
Linux kernel 2.3.43
Linux kernel 2.3.42
Linux kernel 2.3.41
Linux kernel 2.3.40
Linux kernel 2.3.39
Linux kernel 2.3.38
Linux kernel 2.3.37
Linux kernel 2.3.36
Linux kernel 2.3.35
Linux kernel 2.3.34
Linux kernel 2.3.33
Linux kernel 2.3.32
Linux kernel 2.3.31
Linux kernel 2.3.30
Linux kernel 2.3.29
Linux kernel 2.3.28
Linux kernel 2.3.27
Linux kernel 2.3.26
Linux kernel 2.3.25
Linux kernel 2.3.24
Linux kernel 2.3.23
Linux kernel 2.3.22
Linux kernel 2.3.21
Linux kernel 2.3.20
Linux kernel 2.3.19
Linux kernel 2.3.18
Linux kernel 2.3.17
Linux kernel 2.3.16
Linux kernel 2.3.15
Linux kernel 2.3.14
Linux kernel 2.3.13
Linux kernel 2.3.12
Linux kernel 2.3.11
Linux kernel 2.3.10
Linux kernel 2.3.9
Linux kernel 2.3.8
Linux kernel 2.3.7
Linux kernel 2.3.6
Linux kernel 2.3.5
Linux kernel 2.3.4
Linux kernel 2.3.3
Linux kernel 2.3.2
Linux kernel 2.3.1
Linux kernel 2.3 .x
Linux kernel 2.3
Linux kernel 2.2.27 pre2
Linux kernel 2.2.27 pre1
Linux kernel 2.2.27 -rc2
Linux kernel 2.2.27 -rc1
Linux kernel 2.2.26
Linux kernel 2.2.25
Linux kernel 2.2.24 rc5
Linux kernel 2.2.24 rc4
Linux kernel 2.2.24 rc3
Linux kernel 2.2.24 rc2
Linux kernel 2.2.24
Linux kernel 2.2.23 rc2
Linux kernel 2.2.23 rc1
Linux kernel 2.2.23
Linux kernel 2.2.22 rc3
Linux kernel 2.2.22 rc2
Linux kernel 2.2.22 rc1
Linux kernel 2.2.22
Linux kernel 2.2.21 rc4
Linux kernel 2.2.21 rc3
Linux kernel 2.2.21 rc2
Linux kernel 2.2.21 rc1
Linux kernel 2.2.21 pre4
Linux kernel 2.2.21 pre3
Linux kernel 2.2.21 pre2
Linux kernel 2.2.21 pre1
Linux kernel 2.2.21
Linux kernel 2.2.20
Linux kernel 2.2.19
Linux kernel 2.2.17 pre14
Linux kernel 2.2.17
Linux kernel 2.2.16 pre6
Linux kernel 2.2.16 pre5
Linux kernel 2.2.16
Linux kernel 2.2.15 pre20
Linux kernel 2.2.15 pre16
Linux kernel 2.2.15
Linux kernel 2.2.14
+ Red Hat Linux 6.2
 + SCO eDesktop 2.4
+ SCO eServer 2.3.1
+ Sun Cobalt RaQ 4
Linux kernel 2.2.13 pre15
Linux kernel 2.2.13
+ S.u.S.E. Linux 6.4
+ S.u.S.E. Linux 6.3
Linux kernel 2.2.12
Linux kernel 2.2.11
Linux kernel 2.2.10
+ Caldera OpenLinux 2.3
Linux kernel 2.2.9
Linux kernel 2.2.8
Linux kernel 2.2.7
Linux kernel 2.2.6
Linux kernel 2.2.5
Linux kernel 2.2.4 rc1
Linux kernel 2.2.4
Linux kernel 2.2.3
Linux kernel 2.2.2
Linux kernel 2.2.1
Linux kernel 2.2 .x
Linux kernel 2.2
Linux kernel 2.1.132
Linux kernel 2.1.89
Linux kernel 2.1 .x
Linux kernel 2.1
Linux kernel 2.0.39
Linux kernel 2.0.38
Linux kernel 2.0.37
Linux kernel 2.0.36
Linux kernel 2.0.35
Linux kernel 2.0.34
Linux kernel 2.0.33
Linux kernel 2.0.32
Linux kernel 2.0.31
Linux kernel 2.0.30
Linux kernel 2.0.29
Linux kernel 2.0.28
Linux kernel 2.0.27
Linux kernel 2.0.26
Linux kernel 2.0.25
Linux kernel 2.0.24
Linux kernel 2.0.23
Linux kernel 2.0.21
Linux kernel 2.0.20
Linux kernel 2.0.19
Linux kernel 2.0.18
Linux kernel 2.0.17
Linux kernel 2.0.16
Linux kernel 2.0.15
Linux kernel 2.0.14
Linux kernel 2.0.13
Linux kernel 2.0.12
Linux kernel 2.0.11
Linux kernel 2.0.10
Linux kernel 2.0.9
Linux kernel 2.0.8
Linux kernel 2.0.7
Linux kernel 2.0.6
Linux kernel 2.0.5
Linux kernel 2.0.4
Linux kernel 2.0.3
Linux kernel 2.0.2
Linux kernel 2.0.1
Linux kernel 2.0 .x
Linux kernel 2.0
Linux kernel 2.4.36.9
Linux kernel 2.4.36.6
Linux kernel 2.4.34.6
Linux kernel 2.4.34.5
Linux kernel 2.4.34.3
Linux kernel 2.4.33.5
Linux kernel 2.4.33.4
Leif M. Wright simplestmail.cgi 2.2.18
Leif M. Wright simplestmail.cgi 2.0.22
Debian Linux 6.0 sparc
Debian Linux 6.0 s/390
Debian Linux 6.0 powerpc
Debian Linux 6.0 mips
Debian Linux 6.0 ia-64
Debian Linux 6.0 ia-32
Debian Linux 6.0 arm
Debian Linux 6.0 amd64
CentOS CentOS 6
CentOS CentOS 5
Avaya Aura Experience Portal 6.0
Not Vulnerable:

Discussion

Linux Kernel 'ext4_convert_unwritten_exten()' Function Local Information Disclosure Vulnerability

The Linux kernel is prone to a local information-disclosure vulnerability.

Local attackers can exploit this issue to obtain sensitive information that may lead to further attacks.

Exploit / POC

Linux Kernel 'ext4_convert_unwritten_exten()' Function Local Information Disclosure Vulnerability

Currently we are not aware of any working exploits. If you feel we are in error or if you are aware of more recent information, please mail us at: [email protected].

Solution / Fix

Linux Kernel 'ext4_convert_unwritten_exten()' Function Local Information Disclosure Vulnerability

Solution:
Updates are available. Please see the references for more information.

References

Linux Kernel 'ext4_convert_unwritten_exten()' Function Local Information Disclosure Vulnerability

References:

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