Linux kernel CIFS filesystem denial of service

kernel-cifs-filesystem-dos (36593)

Low Risk

Description:

Linux kernel is vulnerable to a denial of service, caused by an error in the CIFS filesystem. An attacker could exploit this vulnerability to dishonor the umask values of a process, resulting in a denial of service.

Platforms Affected:

• Avaya, Application Enablement Services 4.0.1
• Avaya, Communication Manager 3.0
• Avaya, Communication Manager 3.0.1
• Avaya, Communication Manager 3.1
• Avaya, Communication Manager 3.1.1
• Avaya, Communication Manager 3.1.2
• Avaya, Communication Manager 3.1.3
• Avaya, Communication Manager 3.1.4
• Avaya, Communication Manager 4.0
• Avaya, Communication Manager 4.0.1
• Avaya, Communication Manager 4.0.3
• Avaya, Converged Communications Server 3.1.1
• Avaya, Converged Communications Server 3.1.2
• Avaya, Converged Communications Server 4.0
• Avaya, Intuity Audix LX 2.0
• Avaya, Message Networking 3.1
• Avaya, Message Storage Server 3.0
• Canonical, Ubuntu 6.06 LTS
• Canonical, Ubuntu 6.10
• Canonical, Ubuntu 7.04
• Debian, Debian Linux 3.1
• Debian, Debian Linux 4.0
• Linux, Kernel 2.6.0 test7
• Linux, Kernel 2.6.0 test8
• Linux, Kernel 2.6.0 test9
• Linux, Kernel 2.6.0 test6
• Linux, Kernel 2.6.0 test5
• Linux, Kernel 2.6.0
• Linux, Kernel 2.6.0 test3
• Linux, Kernel 2.6.0 test2
• Linux, Kernel 2.6.0 test11
• Linux, Kernel 2.6.0 test10
• Linux, Kernel 2.6.0 test1
• Linux, Kernel 2.6.0 test4
• Linux, Kernel 2.6.1 rc1
• Linux, Kernel 2.6.1 rc2
• Linux, Kernel 2.6.1 rc3
• Linux, Kernel 2.6.1
• Linux, Kernel 2.6.10 rc2
• Linux, Kernel 2.6.10 rc3
• Linux, Kernel 2.6.10
• Linux, Kernel 2.6.10 rc1
• Linux, Kernel 2.6.11 rc2
• Linux, Kernel 2.6.11 rc3
• Linux, Kernel 2.6.11 rc4
• Linux, Kernel 2.6.11
• Linux, Kernel 2.6.11 rc5
• Linux, Kernel 2.6.11 rc1
• Linux, Kernel 2.6.11.1
• Linux, Kernel 2.6.11.10
• Linux, Kernel 2.6.11.11
• Linux, Kernel 2.6.11.12
• Linux, Kernel 2.6.11.2
• Linux, Kernel 2.6.11.3
• 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 2.6.11.9
• Linux, Kernel 2.6.12 rc6
• Linux, Kernel 2.6.12 rc5
• Linux, Kernel 2.6.12
• Linux, Kernel 2.6.12 rc4
• Linux, Kernel 2.6.12 rc3
• Linux, Kernel 2.6.12 rc2
• Linux, Kernel 2.6.12 rc1
• 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 rc6
• Linux, Kernel 2.6.13 rc7
• Linux, Kernel 2.6.13 rc5
• Linux, Kernel 2.6.13
• Linux, Kernel 2.6.13 rc4
• Linux, Kernel 2.6.13 rc3
• Linux, Kernel 2.6.13 rc2
• Linux, Kernel 2.6.13 rc1
• 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 2.6.13.5
• Linux, Kernel 2.6.14 rc3
• Linux, Kernel 2.6.14 rc1
• Linux, Kernel 2.6.14
• Linux, Kernel 2.6.14 rc4
• Linux, Kernel 2.6.14 rc5
• Linux, Kernel 2.6.14 rc2
• 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 2.6.14.6
• Linux, Kernel 2.6.14.7
• 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 rc7
• Linux, Kernel 2.6.15 rc1
• Linux, Kernel 2.6.15
• 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 2.6.15.4
• Linux, Kernel 2.6.15.5
• Linux, Kernel 2.6.15.6
• Linux, Kernel 2.6.15.7
• Linux, Kernel 2.6.16 rc6
• Linux, Kernel 2.6.16 rc5
• Linux, Kernel 2.6.16 rc4
• Linux, Kernel 2.6.16 rc3
• Linux, Kernel 2.6.16
• Linux, Kernel 2.6.16 rc7
• Linux, Kernel 2.6.16.1
• Linux, Kernel 2.6.16.10
• Linux, Kernel 2.6.16.11
• Linux, Kernel 2.6.16.12
• Linux, Kernel 2.6.16.13
• Linux, Kernel 2.6.16.14
• Linux, Kernel 2.6.16.15
• Linux, Kernel 2.6.16.16
• Linux, Kernel 2.6.16.17
• Linux, Kernel 2.6.16.18
• Linux, Kernel 2.6.16.19
• Linux, Kernel 2.6.16.2
• Linux, Kernel 2.6.16.20
• Linux, Kernel 2.6.16.21
• Linux, Kernel 2.6.16.22
• Linux, Kernel 2.6.16.23
• Linux, Kernel 2.6.16.24
• Linux, Kernel 2.6.16.25
• Linux, Kernel 2.6.16.26
• Linux, Kernel 2.6.16.27
• Linux, Kernel 2.6.16.28
• Linux, Kernel 2.6.16.29
• Linux, Kernel 2.6.16.3
• Linux, Kernel 2.6.16.30
• Linux, Kernel 2.6.16.31
• Linux, Kernel 2.6.16.32
• Linux, Kernel 2.6.16.33
• Linux, Kernel 2.6.16.34
• Linux, Kernel 2.6.16.35
• Linux, Kernel 2.6.16.36
• Linux, Kernel 2.6.16.37
• Linux, Kernel 2.6.16.38
• Linux, Kernel 2.6.16.39
• Linux, Kernel 2.6.16.4
• Linux, Kernel 2.6.16.40
• Linux, Kernel 2.6.16.41
• Linux, Kernel 2.6.16.43
• Linux, Kernel 2.6.16.44
• Linux, Kernel 2.6.16.45
• Linux, Kernel 2.6.16.46
• Linux, Kernel 2.6.16.47
• Linux, Kernel 2.6.16.48
• Linux, Kernel 2.6.16.49
• Linux, Kernel 2.6.16.5
• Linux, Kernel 2.6.16.50
• Linux, Kernel 2.6.16.51
• Linux, Kernel 2.6.16.52
• Linux, Kernel 2.6.16.53
• Linux, Kernel 2.6.16.6
• Linux, Kernel 2.6.16.7
• Linux, Kernel 2.6.16.8
• Linux, Kernel 2.6.16.9
• Linux, Kernel 2.6.17
• Linux, Kernel 2.6.17 rc1
• Linux, Kernel 2.6.17 rc6
• Linux, Kernel 2.6.17 rc5
• Linux, Kernel 2.6.17 rc4
• Linux, Kernel 2.6.17 rc3
• Linux, Kernel 2.6.17 rc2
• 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 2.6.17.8
• Linux, Kernel 2.6.17.9
• Linux, Kernel 2.6.18 rc4
• Linux, Kernel 2.6.18 rc3
• Linux, Kernel 2.6.18 rc1
• Linux, Kernel 2.6.18 rc2
• Linux, Kernel 2.6.18 rc5
• Linux, Kernel 2.6.18 rc7
• Linux, Kernel 2.6.18 rc6
• Linux, Kernel 2.6.18
• Linux, Kernel 2.6.18.1
• Linux, Kernel 2.6.18.10
• Linux, Kernel 2.6.18.11
• Linux, Kernel 2.6.18.12
• Linux, Kernel 2.6.18.13
• Linux, Kernel 2.6.18.14
• Linux, Kernel 2.6.18.15
• Linux, Kernel 2.6.18.16
• Linux, Kernel 2.6.18.17
• Linux, Kernel 2.6.18.18
• Linux, Kernel 2.6.18.19
• Linux, Kernel 2.6.18.2
• Linux, Kernel 2.6.18.20
• Linux, Kernel 2.6.18.21
• Linux, Kernel 2.6.18.22
• Linux, Kernel 2.6.18.23
• Linux, Kernel 2.6.18.24
• Linux, Kernel 2.6.18.25
• Linux, Kernel 2.6.18.26
• Linux, Kernel 2.6.18.27
• Linux, Kernel 2.6.18.28
• Linux, Kernel 2.6.18.29
• Linux, Kernel 2.6.18.3
• Linux, Kernel 2.6.18.30
• Linux, Kernel 2.6.18.31
• Linux, Kernel 2.6.18.32
• Linux, Kernel 2.6.18.33
• Linux, Kernel 2.6.18.34
• Linux, Kernel 2.6.18.35
• Linux, Kernel 2.6.18.36
• Linux, Kernel 2.6.18.37
• Linux, Kernel 2.6.18.38
• Linux, Kernel 2.6.18.39
• Linux, Kernel 2.6.18.4
• Linux, Kernel 2.6.18.40
• Linux, Kernel 2.6.18.41
• Linux, Kernel 2.6.18.42
• Linux, Kernel 2.6.18.43
• Linux, Kernel 2.6.18.44
• Linux, Kernel 2.6.18.45
• Linux, Kernel 2.6.18.46
• Linux, Kernel 2.6.18.47
• Linux, Kernel 2.6.18.48
• Linux, Kernel 2.6.18.49
• Linux, Kernel 2.6.18.5
• Linux, Kernel 2.6.18.50
• Linux, Kernel 2.6.18.51
• Linux, Kernel 2.6.18.52
• Linux, Kernel 2.6.18.53
• Linux, Kernel 2.6.18.6
• Linux, Kernel 2.6.18.7
• Linux, Kernel 2.6.18.8
• Linux, Kernel 2.6.18.9
• Linux, Kernel 2.6.19 rc2
• Linux, Kernel 2.6.19 rc1
• Linux, Kernel 2.6.19 rc3
• Linux, Kernel 2.6.19 rc4
• Linux, Kernel 2.6.19.0
• Linux, Kernel 2.6.19.1
• Linux, Kernel 2.6.19.2
• Linux, Kernel 2.6.19.3
• Linux, Kernel 2.6.19.4
• Linux, Kernel 2.6.2 rc3
• Linux, Kernel 2.6.2 rc2
• Linux, Kernel 2.6.2 rc1
• Linux, Kernel 2.6.2
• Linux, Kernel 2.6.20 rc2
• Linux, Kernel 2.6.20
• Linux, Kernel 2.6.20.1
• Linux, Kernel 2.6.20.10
• Linux, Kernel 2.6.20.11
• Linux, Kernel 2.6.20.12
• Linux, Kernel 2.6.20.13
• Linux, Kernel 2.6.20.14
• 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 2.6.20.6
• Linux, Kernel 2.6.20.7
• Linux, Kernel 2.6.20.8
• Linux, Kernel 2.6.20.9
• Linux, Kernel 2.6.21
• Linux, Kernel 2.6.21 git6
• Linux, Kernel 2.6.21 git7
• Linux, Kernel 2.6.21 git5
• Linux, Kernel 2.6.21 git4
• Linux, Kernel 2.6.21 git3
• Linux, Kernel 2.6.21 git2
• Linux, Kernel 2.6.21 git1
• Linux, Kernel 2.6.21 rc7
• Linux, Kernel 2.6.21 rc6
• Linux, Kernel 2.6.21 rc5
• Linux, Kernel 2.6.21 rc4
• Linux, Kernel 2.6.21 rc3
• Linux, Kernel 2.6.21.1
• Linux, Kernel 2.6.21.2
• Linux, Kernel 2.6.21.3
• Linux, Kernel 2.6.21.4
• Linux, Kernel 2.6.21.5
• Linux, Kernel 2.6.21.6
• Linux, Kernel 2.6.21.7
• Linux, Kernel 2.6.22 rc1
• Linux, Kernel 2.6.22 rc7
• Linux, Kernel 2.6.22 rc6
• Linux, Kernel 2.6.3 rc1
• Linux, Kernel 2.6.3 rc4
• Linux, Kernel 2.6.3 rc3
• Linux, Kernel 2.6.3 rc2
• Linux, Kernel 2.6.3
• Linux, Kernel 2.6.4 rc2
• Linux, Kernel 2.6.4 rc1
• Linux, Kernel 2.6.4
• Linux, Kernel 2.6.4 rc3
• Linux, Kernel 2.6.5 rc1
• Linux, Kernel 2.6.5
• Linux, Kernel 2.6.5 rc3
• Linux, Kernel 2.6.5 rc2
• Linux, Kernel 2.6.6 rc3
• Linux, Kernel 2.6.6 rc2
• Linux, Kernel 2.6.6
• Linux, Kernel 2.6.6 rc1
• Linux, Kernel 2.6.7
• Linux, Kernel 2.6.7 rc3
• Linux, Kernel 2.6.7 rc2
• Linux, Kernel 2.6.7 rc1
• Linux, Kernel 2.6.8 rc4
• Linux, Kernel 2.6.8 rc3
• Linux, Kernel 2.6.8 rc2
• Linux, Kernel 2.6.8 rc1
• Linux, Kernel 2.6.8
• Linux, Kernel 2.6.8.1
• Linux, Kernel 2.6.9
• Linux, Kernel 2.6.9 rc4
• Linux, Kernel 2.6.9 rc3
• Linux, Kernel 2.6.9 rc2
• Linux, Kernel 2.6.9 rc1
• MandrakeSoft, Mandrake Linux 2007.1 X86_64
• MandrakeSoft, Mandrake Linux 2007.1
• MandrakeSoft, Mandrake Linux Corporate Server 4.0 X86_64
• MandrakeSoft, Mandrake Linux Corporate Server 4.0
• Novell, SLE SDK 10 SP1
• Novell, SUSE Linux Enterprise 10 SP1 DEBUGINFO
• Novell, SUSE Linux Enterprise Desktop 10 SP1
• Novell, SUSE Linux Enterprise Server 10 SP1
• Novell, SUSE Linux Enterprise Server 10
• RedHat, Enterprise Linux 4 AS
• RedHat, Enterprise Linux 4 WS
• RedHat, Enterprise Linux 4 ES
• RedHat, Enterprise Linux 4 Desktop
• RedHat, Enterprise Linux 5
• RedHat, Enterprise Linux 5 Client
• RedHat, Enterprise Linux 5 Client Workstation
• SuSE, SLE SDK 10
• SuSE, SuSE Linux 10.0 Desktop
• SuSE, SuSE Linux 10.1

Remedy:

For Red Hat Linux (kernel):
Refer to RHSA-2007:0705-2 for patch, upgrade, or suggested workaround information. See References.

For Ubuntu Linux:
Refer to USN-518-1 for patch, upgrade, or suggested workaround information. See References.

For Debian Linux (linux-2.6):
Refer to DSA-1378-1 for patch, upgrade, or suggested workaround information. See References.

For other distributions:
Apply the appropriate update for your system. See References.

Consequences:

Denial of Service

References:

• Linux Kernel Web site, The Linux Kernel Archives at http://www.kernel.org/.
• ASA-2007-142: HP-UX Running CIFS Server (Samba) Remote Denial of Service (DoS) (HPSBUX02204)
• ASA-2007-474: kernel security update (RHSA-2007-0939)
• BID-25672: Linux Kernel CIFS Local Privilege Escalation Vulnerability
• CVE-2007-3740: The CIFS filesystem in the Linux kernel before 2.6.22, when Unix extension support is enabled, does not honor the umask of a process, which allows local users to gain privileges.
• DSA-1378: linux-2.6 -- several vulnerabilities
• DSA-1504: kernel-source-2.6.8 -- several vulnerabilities
• MDVSA-2008:008: Updated kernel packages fix multiple vulnerabilities and bugs
• MDVSA-2008:105: Updated kernel packages fix vulnerabilities
• RHSA-2007-0705: Important: kernel security update
• RHSA-2007-0939: Important: kernel security update
• SA27747: Avaya Products Kernel Multiple Vulnerabilities
• SUSE-SA:2007:064: Linux kernel security problems
• USN-518-1: Linux kernel vulnerabilities

Reported:

Sep 13, 2007

The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (IBM Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

For corrections or additions please email xforce@iss.net

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