Linux kernel wait_task_stopped() denial of service

linux-kernel-waittaskstopped-dos (38547)

Low Risk

Description:

Linux kernel is vulnerable to a denial of service, caused by an error in the wait_task_stopped() function. A local attacker could exploit this vulnerability to cause a kernel panic, resulting in a denial of service.

*CVSS:

Base Score:	4.9
Access Vector:	Local
Access Complexity:	Low
Authentication:	None
Confidentiality Impact:	None
Integrity Impact:	None
Availability Impact:	Complete
Temporal Score:	3.6
Exploitability:	Unproven
Remediation Level:	Official-Fix
Report Confidence:	Confirmed

Consequences:

Denial of Service

Remedy:

Upgrade to the latest version of Linux kernel (2.6.23.8 or later), available from The Linux Kernel Archives Web site. See References.

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

References:

• The Linux Kernel Archives Web site: The Linux Kernel Archives.
• The Linux Kernel Archives Web site: ChangeLog-2.6.23.8 .
• ASA-2008-102: kernel security and bug fix update (RHSA-2008-0055)
• BID-26477: Linux Kernel wait_task_stopped Local Denial of Service Vulnerability
• CVE-2007-5500: The wait_task_stopped function in the Linux kernel before 2.6.23.8 checks a TASK_TRACED bit instead of an exit_state value, which allows local users to cause a denial of service (machine crash) via unspecified vectors. NOTE: some of these details are obtained from third party information.
• DSA-1428: linux-2.6 -- several vulnerabilities
• MDVSA-2008:008: Updated kernel packages fix multiple vulnerabilities and bugs
• MDVSA-2008:044: Updated kernel packages fix multiple vulnerabilities and bugs
• MDVSA-2008:112: Updated kernel packages fix security issues
• RHSA-2008-0055: Important: kernel security and bug fix update
• SA27664: Linux Kernel Multiple Denial of Service Vulnerabilities
• SUSE-SA:2007:063: Linux kernel security problems
• SUSE-SA:2008:013: Linux kernel security problem
• SUSE-SA:2008:030: Linux kernel security update
• SUSE-SA:2008:032: SUSE Linux Enterprise 10 SP1 Linux kernel

Platforms Affected:

• Canonical Ubuntu 6.06 LTS
• Canonical Ubuntu 6.10
• Canonical Ubuntu 7.04
• Canonical Ubuntu 7.10
• Debian Debian Linux 4.0
• Linux Kernel 2.6.0 test9-cvs
• Linux Kernel 2.6.0
• Linux Kernel 2.6.1 rc2
• Linux Kernel 2.6.1 rc1
• Linux Kernel 2.6.1
• Linux Kernel 2.6.10
• Linux Kernel 2.6.10 rc2
• Linux Kernel 2.6.11 rc4
• Linux Kernel 2.6.11 rc3
• Linux Kernel 2.6.11 rc2
• Linux Kernel 2.6.11
• 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 2.6.12 rc5
• Linux Kernel 2.6.12 rc4
• 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 rc7
• Linux Kernel 2.6.13 rc6
• Linux Kernel 2.6.13
• Linux Kernel 2.6.13 rc1
• Linux Kernel 2.6.13 rc4
• 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 rc3
• Linux Kernel 2.6.14 rc4
• Linux Kernel 2.6.14 rc1
• Linux Kernel 2.6.14 rc2
• 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 2.6.15 rc2
• Linux Kernel 2.6.15
• Linux Kernel 2.6.15 rc1
• Linux Kernel 2.6.15 rc3
• 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 2.6.16
• 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 2.6.17 rc5
• Linux Kernel 2.6.17
• 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 2.6.17.5
• Linux Kernel 2.6.17.6
• Linux Kernel 2.6.17.7
• Linux Kernel 2.6.17.8
• Linux Kernel 2.6.18
• Linux Kernel 2.6.18 8.1.8.El5
• Linux Kernel 2.6.18.1
• Linux Kernel 2.6.18.3
• Linux Kernel 2.6.18.4
• Linux Kernel 2.6.19 rc3
• Linux Kernel 2.6.19 rc4
• Linux Kernel 2.6.19
• Linux Kernel 2.6.19 rc1
• Linux Kernel 2.6.19 rc2
• Linux Kernel 2.6.19.1
• Linux Kernel 2.6.19.2
• Linux Kernel 2.6.2
• Linux Kernel 2.6.20
• Linux Kernel 2.6.20.1
• 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 rc6
• Linux Kernel 2.6.21 rc5
• Linux Kernel 2.6.21 rc4
• Linux Kernel 2.6.21
• Linux Kernel 2.6.21 rc3
• Linux Kernel 2.6.21.1
• Linux Kernel 2.6.21.2
• Linux Kernel 2.6.21.4
• Linux Kernel 2.6.21.6
• Linux Kernel 2.6.21.7
• Linux Kernel 2.6.22
• Linux Kernel 2.6.22 rc7
• Linux Kernel 2.6.22.1
• Linux Kernel 2.6.22.11
• 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 2.6.23.1
• 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 rc2
• Linux Kernel 2.6.24 rc1
• Linux Kernel 2.6.3
• Linux Kernel 2.6.4
• Linux Kernel 2.6.5
• Linux Kernel 2.6.6 rc1
• Linux Kernel 2.6.6
• Linux Kernel 2.6.7 rc1
• Linux Kernel 2.6.7
• Linux Kernel 2.6.8 rc2
• Linux Kernel 2.6.8
• Linux Kernel 2.6.8 rc3
• Linux Kernel 2.6.8 rc1
• Linux Kernel 2.6.8.1
• Linux Kernel 2.6.9
• MandrakeSoft Mandrake Linux 2007.1 X86_64
• MandrakeSoft Mandrake Linux 2007.1
• MandrakeSoft Mandrake Linux 2008.0 X86_64
• MandrakeSoft Mandrake Linux 2008.0
• MandrakeSoft Mandrake Linux Corporate Server 4.0
• MandrakeSoft Mandrake Linux Corporate Server 4.0 X86_64
• Novell OpenSUSE 10.2
• Novell OpenSUSE 10.3
• 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
• RedHat Enterprise Linux 4 AS
• RedHat Enterprise Linux 4 Desktop
• RedHat Enterprise Linux 4 WS
• RedHat Enterprise Linux 4 ES
• SuSE SuSE Linux Enterprise Realtime 10 SP1
• Turbolinux Turbolinux 11 Server
• Turbolinux Turbolinux 11 Server x64 Ed

Reported:

Nov 16, 2007

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