Linux Kernel UBIFS denial of service

linux-kernel-ubifs-dos (44410)

Low Risk

Description:

Linux Kernel is vulnerable to a denial of service, caused by an error in UBIFS. A local attacker could exploit this vulnerability using the "touch tmp" command to install a Child dentry (directory entry) for a deleted directory resulting in a local filesystem crash.

*CVSS:

Base Score:	1.9
Access Vector:	Local
Access Complexity:	Medium
Authentication:	None
Confidentiality Impact:	None
Integrity Impact:	None
Availability Impact:	Partial
Temporal Score:	1.7
Exploitability:	High
Remediation Level:	Official-Fix
Report Confidence:	Confirmed

Consequences:

Denial of Service

Remedy:

Upgrade to the latest version of the Linux Kernel (2.6.25.15 or later), available from The Linux Kernel Archives Web site. See References.

References:

• Red Hat Bugzilla Bug 457858: CVE-2008-3275 Linux kernel local filesystem DoS.
• The Linux Kernel Archives Web site: ChangeLog-2.6.25.15.
• The Linux Kernel Archives Web site: The Linux Kernel Archives.
• ASA-2009-005: kernel security update (RHSA-2009-0001)
• ASA-2009-035: kernel security update (RHSA-2008-0787)
• ASA-2009-058: kernel security and bug fix update (RHSA-2009-0014)
• BID-30647: Linux Kernel UBIFS Orphan Inode Local Denial of Service Vulnerability
• CVE-2008-3275: The (1) real_lookup and (2) __lookup_hash functions in fs/namei.c in the vfs implementation in the Linux kernel before 2.6.25.15 do not prevent creation of a child dentry for a deleted (aka S_DEAD) directory, which allows local users to cause a denial of service (overflow of the UBIFS orphan area) via a series of attempted file creations within deleted directories.
• DSA-1630: linux-2.6 -- denial of service/information leak
• DSA-1636: linux-2.6.24 -- denial of service/information leak
• MDVSA-2008:220: kernel
• MDVSA-2008:220-1: kernel
• RHSA-2008-0787: Important: kernel security update
• RHSA-2008-0857: Important: kernel security and bug fix update
• RHSA-2008-0885: Important: kernel security and bug fix update
• RHSA-2008-0973: Important: kernel security and bug fix update
• RHSA-2009-0001: Important: kernel security update
• RHSA-2009-0014: Important: kernel security and bug fix update
• SECTRACK ID: 1020739: Linux Kernel VFS Lookup Bug Lets Local Users Deny Service
• SUSE-SA:2008:044: Linux kernel security update
• SUSE-SA:2008:048: SUSE Linux Enterprise 10 SP2 kernel update
• SUSE-SA:2008:049: SUSE Security Announcement
• USN-637-1: Linux kernel vulnerabilities
• VUPEN/ADV-2008-2430: Linux Kernel VFS Lookup Local Denial of Service Vulnerability

Platforms Affected:

• Canonical Ubuntu 6.06 LTS
• Canonical Ubuntu 7.04
• Canonical Ubuntu 7.10
• Canonical Ubuntu 8.04 LTS
• Debian Debian Linux 4.0
• Linux Kernel 2.6.0 test9
• Linux Kernel 2.6.0 test8
• Linux Kernel 2.6.0 test7
• Linux Kernel 2.6.0 test6
• Linux Kernel 2.6.0 test5
• Linux Kernel 2.6.0 test4
• 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
• Linux Kernel 2.6.1 rc3
• Linux Kernel 2.6.1 rc2
• Linux Kernel 2.6.1 rc1
• Linux Kernel 2.6.1
• Linux Kernel 2.6.10 rc1
• Linux Kernel 2.6.10 rc2
• Linux Kernel 2.6.10 rc3
• Linux Kernel 2.6.10
• 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 rc1
• Linux Kernel 2.6.11 rc5
• 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 rc3
• Linux Kernel 2.6.12 rc2
• Linux Kernel 2.6.12 rc4
• Linux Kernel 2.6.12 rc5
• Linux Kernel 2.6.12 rc6
• Linux Kernel 2.6.12 rc1
• Linux Kernel 2.6.12
• 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 rc5
• 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
• Linux Kernel 2.6.13 rc7
• Linux Kernel 2.6.13 rc6
• 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 rc5
• Linux Kernel 2.6.14 rc4
• Linux Kernel 2.6.14 rc2
• Linux Kernel 2.6.14 rc3
• Linux Kernel 2.6.14 rc1
• Linux Kernel 2.6.14
• 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
• Linux Kernel 2.6.15 rc2
• Linux Kernel 2.6.15 rc1
• Linux Kernel 2.6.15 rc3
• Linux Kernel 2.6.15 rc7
• Linux Kernel 2.6.15 rc6
• Linux Kernel 2.6.15 rc5
• Linux Kernel 2.6.15 rc4
• 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 rc5
• Linux Kernel 2.6.17 rc3
• Linux Kernel 2.6.17 rc2
• Linux Kernel 2.6.17 rc4
• Linux Kernel 2.6.17
• Linux Kernel 2.6.17 rc1
• Linux Kernel 2.6.17 rc6
• 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 rc5
• Linux Kernel 2.6.18 rc2
• Linux Kernel 2.6.18 rc1
• Linux Kernel 2.6.18 rc3
• Linux Kernel 2.6.18 rc4
• Linux Kernel 2.6.18 rc6
• Linux Kernel 2.6.18 rc7
• 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 rc1
• Linux Kernel 2.6.19 rc2
• 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 rc7
• Linux Kernel 2.6.21
• Linux Kernel 2.6.21 git5
• Linux Kernel 2.6.21 git6
• Linux Kernel 2.6.21 git7
• Linux Kernel 2.6.21 git4
• Linux Kernel 2.6.21 git3
• Linux Kernel 2.6.21 git2
• 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 git1
• 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 2.6.22
• Linux Kernel 2.6.22.1
• Linux Kernel 2.6.22.10
• 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 2.6.22.18
• Linux Kernel 2.6.22.19
• Linux Kernel 2.6.22.2
• Linux Kernel 2.6.22.20
• Linux Kernel 2.6.22.21
• 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 2.6.22.9
• Linux Kernel 2.6.23 rc1
• Linux Kernel 2.6.23
• Linux Kernel 2.6.23 rc2
• Linux Kernel 2.6.23.1
• Linux Kernel 2.6.23.10
• Linux Kernel 2.6.23.11
• Linux Kernel 2.6.23.12
• Linux Kernel 2.6.23.13
• 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 2.6.23.8
• Linux Kernel 2.6.23.9
• Linux Kernel 2.6.24 rc2
• Linux Kernel 2.6.24 rc1
• Linux Kernel 2.6.24
• Linux Kernel 2.6.24 rc3
• Linux Kernel 2.6.24.1
• Linux Kernel 2.6.24.2
• Linux Kernel 2.6.24.3
• Linux Kernel 2.6.24.4
• Linux Kernel 2.6.24.5
• Linux Kernel 2.6.24.6
• Linux Kernel 2.6.25
• 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 2.6.25.14
• 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 2.6.3 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
• Linux Kernel 2.6.4 rc3
• Linux Kernel 2.6.4 rc2
• Linux Kernel 2.6.4 rc1
• Linux Kernel 2.6.5 rc2
• Linux Kernel 2.6.5 rc1
• Linux Kernel 2.6.5
• Linux Kernel 2.6.5 rc3
• 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 Corporate Server 4.0
• MandrakeSoft Mandrake Linux Corporate Server 4.0 X86_64
• Novell OpenSUSE 11.0
• Novell SLE SDK 10 SP2
• Novell SLE SDK 10 SP1
• Novell SUSE Linux Enterprise 10 SP2 DEBUGINFO
• Novell SUSE Linux Enterprise 10 SP1 DEBUGINFO
• Novell SUSE Linux Enterprise Desktop 10 SP1
• Novell SUSE Linux Enterprise Desktop 10 SP2
• Novell SUSE Linux Enterprise Server 10 SP2
• Novell SUSE Linux Enterprise Server 10 SP1
• RedHat Enterprise Linux 2.1 ES
• RedHat Enterprise Linux 2.1 WS
• RedHat Enterprise Linux 2.1 AS
• RedHat Enterprise Linux 3 Desktop
• RedHat Enterprise Linux 3 WS
• RedHat Enterprise Linux 3 ES
• RedHat Enterprise Linux 3 AS
• RedHat Enterprise Linux 4 WS
• RedHat Enterprise Linux 4 AS
• RedHat Enterprise Linux 4 ES
• RedHat Enterprise Linux 4 Desktop
• RedHat Enterprise Linux 5 Client
• RedHat Enterprise Linux 5
• RedHat Linux Advanced Workstation 2.1 Itanium

Reported:

Aug 06, 2008

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