Title: Linux Kernel CIFS 'decode_unicode_ssetup()' Remote Buffer Overflow Vulnerability
Severity: CRITICAL
Description:
The Linux Kernel is prone to a buffer-overflow vulnerability because it fails to perform adequate boundary checks on user-supplied data. Specifically, it fails to allocate sufficient memory for Unicode string conversion of 'serverDomain' strings when starting CIFS (Common Internet File System) sessions. This error occurs in the 'decode_unicode_ssetup()' function in the 'fs/cifs/sess.c' source file.
An attacker may be able to exploit this issue by constructing and sending malicious network data to the affected computer.
Successfully exploiting this issue will allow the attacker to execute arbitrary code with kernel-level privileges, resulting in the complete compromise of affected computers. Failed exploit attempts will result in a denial-of-service condition.
Affected Products:
- Debian Linux 4.0
- Debian Linux 4.0 alpha
- Debian Linux 4.0 amd64
- Debian Linux 4.0 arm
- Debian Linux 4.0 hppa
- Debian Linux 4.0 ia-32
- Debian Linux 4.0 ia-64
- Debian Linux 4.0 m68k
- Debian Linux 4.0 mips
- Debian Linux 4.0 mipsel
- Debian Linux 4.0 powerpc
- Debian Linux 4.0 s/390
- Debian Linux 4.0 sparc
- Debian Linux 5.0
- Debian Linux 5.0 alpha
- Debian Linux 5.0 amd64
- Debian Linux 5.0 arm
- Debian Linux 5.0 armel
- Debian Linux 5.0 hppa
- Debian Linux 5.0 ia-32
- Debian Linux 5.0 ia-64
- Debian Linux 5.0 m68k
- Debian Linux 5.0 mips
- Debian Linux 5.0 mipsel
- Debian Linux 5.0 powerpc
- Debian Linux 5.0 s/390
- Debian Linux 5.0 sparc
- Linux kernel 2.6.0
- Linux kernel 2.6.0 -test1
- Linux kernel 2.6.0 -test10
- Linux kernel 2.6.0 -test11
- Linux kernel 2.6.0 -test2
- Linux kernel 2.6.0 -test3
- Linux kernel 2.6.0 -test4
- Linux kernel 2.6.0 -test5
- Linux kernel 2.6.0 -test6
- Linux kernel 2.6.0 -test7
- Linux kernel 2.6.0 -test8
- Linux kernel 2.6.0 -test9
- Linux kernel 2.6.0 -test9-CVS
- Linux kernel 2.6.0 .10
- Linux kernel 2.6.1
- Linux kernel 2.6.1 -rc1
- Linux kernel 2.6.1 -rc2
- Linux kernel 2.6.10
- Linux kernel 2.6.10
- Linux kernel 2.6.10 rc2
- Linux kernel 2.6.11
- Linux kernel 2.6.11
- Linux kernel 2.6.11 -rc2
- Linux kernel 2.6.11 -rc3
- Linux kernel 2.6.11 -rc4
- Linux kernel 2.6.11 .11
- Linux kernel 2.6.11 .12
- Linux kernel 2.6.11 .4
- Linux kernel 2.6.11 .5
- Linux kernel 2.6.11 .6
- Linux kernel 2.6.11 .7
- Linux kernel 2.6.11 .8
- Linux kernel 2.6.11.4
- Linux kernel 2.6.12
- Linux kernel 2.6.12
- Linux kernel 2.6.12 -rc1
- Linux kernel 2.6.12 -rc4
- Linux kernel 2.6.12 -rc5
- Linux kernel 2.6.12 .1
- Linux kernel 2.6.12 .12
- Linux kernel 2.6.12 .2
- Linux kernel 2.6.12 .22
- Linux kernel 2.6.12 .3
- Linux kernel 2.6.12 .4
- Linux kernel 2.6.12 .5
- Linux kernel 2.6.12 .6
- Linux kernel 2.6.13
- Linux kernel 2.6.13
- Linux kernel 2.6.13 -rc1
- Linux kernel 2.6.13 -rc4
- Linux kernel 2.6.13 -rc6
- Linux kernel 2.6.13 -rc7
- Linux kernel 2.6.13 .1
- Linux kernel 2.6.13 .2
- Linux kernel 2.6.13 .3
- Linux kernel 2.6.13 .4
- Linux kernel 2.6.14
- Linux kernel 2.6.14
- Linux kernel 2.6.14 -rc1
- Linux kernel 2.6.14 -rc2
- Linux kernel 2.6.14 -rc3
- Linux kernel 2.6.14 -rc4
- Linux kernel 2.6.14 .1
- Linux kernel 2.6.14 .2
- Linux kernel 2.6.14 .3
- Linux kernel 2.6.14.4
- Linux kernel 2.6.14.5
- Linux kernel 2.6.15
- Linux kernel 2.6.15
- Linux kernel 2.6.15 -rc1
- Linux kernel 2.6.15 -rc2
- Linux kernel 2.6.15 -rc3
- Linux kernel 2.6.15 -rc4
- Linux kernel 2.6.15 -rc5
- Linux kernel 2.6.15 -rc6
- Linux kernel 2.6.15 .4
- Linux kernel 2.6.15-27.48
- Linux kernel 2.6.15.1
- Linux kernel 2.6.15.11
- Linux kernel 2.6.15.2
- Linux kernel 2.6.15.3
- Linux kernel 2.6.15.5
- Linux kernel 2.6.15.6
- Linux kernel 2.6.16
- Linux kernel 2.6.16
- Linux kernel 2.6.16 -rc1
- Linux kernel 2.6.16 .1
- Linux kernel 2.6.16 .11
- Linux kernel 2.6.16 .12
- Linux kernel 2.6.16 .19
- Linux kernel 2.6.16 .23
- Linux kernel 2.6.16 .7
- Linux kernel 2.6.16 .9
- Linux kernel 2.6.16 13
- Linux kernel 2.6.16 27
- Linux kernel 2.6.16.16
- Linux kernel 2.6.16.17
- Linux kernel 2.6.16.18
- Linux kernel 2.6.16.2
- Linux kernel 2.6.16.21
- Linux kernel 2.6.16.3
- Linux kernel 2.6.16.4
- Linux kernel 2.6.16.5
- Linux kernel 2.6.16.8
- Linux kernel 2.6.17
- Linux kernel 2.6.17
- Linux kernel 2.6.17
- Linux kernel 2.6.17
- Linux kernel 2.6.17 -rc5
- Linux kernel 2.6.17 .8
- Linux kernel 2.6.17.1
- Linux kernel 2.6.17.10
- Linux kernel 2.6.17.11
- Linux kernel 2.6.17.12
- Linux kernel 2.6.17.13
- Linux kernel 2.6.17.14
- Linux kernel 2.6.17.2
- Linux kernel 2.6.17.3
- Linux kernel 2.6.17.4
- Linux kernel 2.6.17.5
- Linux kernel 2.6.17.6
- Linux kernel 2.6.17.7
- Linux kernel 2.6.17.9
- Linux kernel 2.6.18
- Linux kernel 2.6.18
- Linux kernel 2.6.18 .1
- Linux kernel 2.6.18-53
- Linux kernel 2.6.18-8.1.8.el5
- Linux kernel 2.6.18.3
- Linux kernel 2.6.18.4
- Linux kernel 2.6.19
- Linux kernel 2.6.19 -rc1
- Linux kernel 2.6.19 -rc2
- Linux kernel 2.6.19 -rc3
- Linux kernel 2.6.19 -rc4
- Linux kernel 2.6.19.1
- Linux kernel 2.6.19.1
- Linux kernel 2.6.19.2
- Linux kernel 2.6.2
- Linux kernel 2.6.20
- Linux kernel 2.6.20
- Linux kernel 2.6.20 -git5
- Linux kernel 2.6.20-2
- Linux kernel 2.6.20-rc2
- Linux kernel 2.6.20.1
- Linux kernel 2.6.20.11
- Linux kernel 2.6.20.13
- Linux kernel 2.6.20.15
- Linux kernel 2.6.20.2
- Linux kernel 2.6.20.3
- Linux kernel 2.6.20.4
- Linux kernel 2.6.20.5
- Linux kernel 2.6.20.8
- Linux kernel 2.6.20.9
- Linux kernel 2.6.21
- Linux kernel 2.6.21 .1
- Linux kernel 2.6.21 4
- Linux kernel 2.6.21-RC3
- Linux kernel 2.6.21-RC3
- Linux kernel 2.6.21-RC4
- Linux kernel 2.6.21-RC5
- Linux kernel 2.6.21-RC6
- Linux kernel 2.6.21-git8
- Linux kernel 2.6.21.2
- Linux kernel 2.6.21.3
- Linux kernel 2.6.21.6
- Linux kernel 2.6.21.7
- Linux kernel 2.6.22
- Linux kernel 2.6.22-rc1
- Linux kernel 2.6.22-rc7
- Linux kernel 2.6.22.1
- Linux kernel 2.6.22.11
- Linux kernel 2.6.22.12
- Linux kernel 2.6.22.13
- Linux kernel 2.6.22.14
- Linux kernel 2.6.22.15
- Linux kernel 2.6.22.16
- Linux kernel 2.6.22.17
- Linux kernel 2.6.22.2
- Linux kernel 2.6.22.3
- Linux kernel 2.6.22.4
- Linux kernel 2.6.22.5
- Linux kernel 2.6.22.6
- Linux kernel 2.6.22.7
- Linux kernel 2.6.22.8
- Linux kernel 2.6.23
- Linux kernel 2.6.23-rc1
- Linux kernel 2.6.23-rc2
- Linux kernel 2.6.23.09
- Linux kernel 2.6.23.1
- Linux kernel 2.6.23.10
- Linux kernel 2.6.23.14
- Linux kernel 2.6.23.2
- Linux kernel 2.6.23.3
- Linux kernel 2.6.23.4
- Linux kernel 2.6.23.5
- Linux kernel 2.6.23.6
- Linux kernel 2.6.23.7
- Linux kernel 2.6.24
- Linux kernel 2.6.24-git13
- Linux kernel 2.6.24-rc1
- Linux kernel 2.6.24-rc2
- Linux kernel 2.6.24-rc3
- Linux kernel 2.6.24-rc4
- Linux kernel 2.6.24-rc5
- Linux kernel 2.6.24.1
- Linux kernel 2.6.24.2
- Linux kernel 2.6.24.6
- Linux kernel 2.6.25
- Linux kernel 2.6.25
- Linux kernel 2.6.25 .15
- Linux kernel 2.6.25 19
- Linux kernel 2.6.25.1
- Linux kernel 2.6.25.10
- Linux kernel 2.6.25.11
- Linux kernel 2.6.25.12
- Linux kernel 2.6.25.13
- Linux kernel 2.6.25.2
- Linux kernel 2.6.25.3
- Linux kernel 2.6.25.4
- Linux kernel 2.6.25.5
- Linux kernel 2.6.25.6
- Linux kernel 2.6.25.7
- Linux kernel 2.6.25.8
- Linux kernel 2.6.25.9
- Linux kernel 2.6.26
- Linux kernel 2.6.26 -rc6
- Linux kernel 2.6.26 .5
- Linux kernel 2.6.26 7
- Linux kernel 2.6.26-rc5-git1
- Linux kernel 2.6.26.1
- Linux kernel 2.6.26.3
- Linux kernel 2.6.26.4
- Linux kernel 2.6.26.6
- Linux kernel 2.6.27
- Linux kernel 2.6.27 -rc6-git6
- Linux kernel 2.6.27 -rc8
- Linux kernel 2.6.27 -rc8-git5
- Linux kernel 2.6.27 .5
- Linux kernel 2.6.27 12
- Linux kernel 2.6.27 3
- Linux kernel 2.6.27 6
- Linux kernel 2.6.27-rc1
- Linux kernel 2.6.27-rc2
- Linux kernel 2.6.27-rc5
- Linux kernel 2.6.27-rc6
- Linux kernel 2.6.27.12
- Linux kernel 2.6.27.13
- Linux kernel 2.6.27.14
- Linux kernel 2.6.27.8
- Linux kernel 2.6.28
- Linux kernel 2.6.28 -git7
- Linux kernel 2.6.28 -rc1
- Linux kernel 2.6.28 -rc5
- Linux kernel 2.6.28 -rc7
- Linux kernel 2.6.28.1
- Linux kernel 2.6.28.2
- Linux kernel 2.6.28.3
- Linux kernel 2.6.28.4
- Linux kernel 2.6.28.5
- Linux kernel 2.6.28.6
- Linux kernel 2.6.28.8
- Linux kernel 2.6.28.9
- Linux kernel 2.6.29
- Linux kernel 2.6.29-git1
- Linux kernel 2.6.29-git14
- Linux kernel 2.6.29-git8
- Linux kernel 2.6.29-rc1
- Linux kernel 2.6.29-rc2
- Linux kernel 2.6.29-rc2-git1
- Linux kernel 2.6.29.1
- Linux kernel 2.6.3
- Linux kernel 2.6.4
- Linux kernel 2.6.5
- Linux kernel 2.6.6
- Linux kernel 2.6.6 rc1
- Linux kernel 2.6.7
- Linux kernel 2.6.7 rc1
- Linux kernel 2.6.8
- Linux kernel 2.6.8 rc1
- Linux kernel 2.6.8 rc2
- Linux kernel 2.6.8 rc3
- Linux kernel 2.6.8.1
- Linux kernel 2.6.9
- RedHat Enterprise Linux 5 server
- RedHat Enterprise Linux Desktop 5 client
- RedHat Fedora 10
- RedHat Fedora 9
- RedHat Fedora Core2
- RedHat Fedora Core3
- RedHat Fedora Core4
- S.u.S.E. Linux Enterprise Server 9
- S.u.S.E. Linux Personal 9.1.0
- S.u.S.E. Linux Personal 9.1.0 x86_64
- S.u.S.E. Linux Personal 9.2.0
- S.u.S.E. Linux Personal 9.2.0 x86_64
- Trustix Secure Enterprise Linux 2.0.0
- Trustix Secure Linux 2.0.0
- Trustix Secure Linux 2.1.0
- Trustix Secure Linux 2.2.0
- Trustix Secure Linux 3.0.0
- Ubuntu Ubuntu Linux 4.1.0 ia32
- Ubuntu Ubuntu Linux 4.1.0 ia64
- Ubuntu Ubuntu Linux 4.1.0 ppc
- Ubuntu Ubuntu Linux 5.0.0 4 amd64
- Ubuntu Ubuntu Linux 5.0.0 4 i386
- Ubuntu Ubuntu Linux 5.0.0 4 powerpc
References:
- Eugene Teo: Bug 496572 - kernel: cifs: fix unicode string area word alignment in session s
- Jeff Layton: cifs: fix unicode string area word alignment in session setup
- kernel.org: Linux kernel Homepage
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