Linux kernel cpuset_tasks_read function information disclosure
| kernel-cpusettasksread-info-disclosure (34779) |  Low Risk |
Description:
Linux kernel could allow a local attacker to obtain sensitive information, caused by an underflow error in the cpuset_tasks_read function. A local attacker could exploit this vulnerability to read kernel memory and obtain sensitive information.
Platforms Affected:
- Canonical, Ubuntu 6.06 LTS
- Canonical, Ubuntu 6.10
- Canonical, Ubuntu 7.04
- Debian, Debian Linux 4.0
- 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 2.6.20.2
- 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 2.6.21.1
- Linux, Kernel 2.6.21.2
- Linux, Kernel 2.6.21.3
- MandrakeSoft, Mandrake Linux 2007
- MandrakeSoft, Mandrake Linux 2007 X86_64
- MandrakeSoft, Mandrake Linux 2007.1 X86_64
- MandrakeSoft, Mandrake Linux 2007.1
- MandrakeSoft, Mandrake Linux 2008.0 X86_64
- MandrakeSoft, Mandrake Linux Corporate Server 4.0 X86_64
- MandrakeSoft, Mandrake Linux Corporate Server 4.0
- Novell, Linux Desktop 9
- Novell, Linux POS 9
- Novell, Open Enterprise Server
- Novell, Open Enterprise Server
- 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
- Novell, SUSE Linux Enterprise Server 10 SP1
- Novell, UnitedLinux 1.0
- RedHat, Enterprise Linux 5
- RedHat, Enterprise Linux 5 Client
- RedHat, Enterprise Linux 5 Client Workstation
- SuSE, Linux Enterprise Server 9
- SuSE, SLE SDK 10
- SuSE, SuSE Linux
- SuSE, SuSE Linux Retail Solution 8
- SuSE, SuSE SLES 9
Remedy:
Upgrade to the latest version of the Linux kernel (2.6.20.13 or 2.6.21.4 or later), available from the Linux Kernel Web site. See References.
For Ubuntu Linux (linux-source):
Refer to USN-489-1 for patch, upgrade, or suggested workaround information. See References.
For Mandriva Linux (kernel):
Refer to MDKSA-2007:171 for patch, upgrade, or suggested workaround information. See References.
For Ubuntu Linux (linux-source):
Refer to USN-510-1 for patch, upgrade, or suggested workaround information. See References.
For Debian GNU/Linux (linux):
Refer to DSA-1363-1 for patch, upgrade, or suggested workaround information. See References.
For Red Hat Linux (kernel):
Refer to RHSA-2007:0705-2 for patch, upgrade, or suggested workaround information. See References.
For other distributions:
Contact your vendor for upgrade or patch information.
Consequences:
Obtain Information
References:
- iDefense Labs PUBLIC ADVISORY: 06.07.07, Linux Kernel cpuset tasks Information Disclosure Vulnerability at http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=541.
- The Linux Kernel Archives, ChangeLog-2.6.21.4 at http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.21.4.
- BID-24389: Linux Kernel CPUSet Tasks Memory Leak Information Disclosure Vulnerability
- CVE-2007-2875: Integer underflow in the cpuset_tasks_read function in the Linux kernel before 2.6.20.13, and 2.6.21.x before 2.6.21.4, when the cpuset filesystem is mounted, allows local users to obtain kernel memory contents by using a large offset when reading the /dev/cpuset/tasks file.
- DSA-1363: linux-2.6 -- several vulnerabilities
- MDKSA-2007:171: Updated kernel packages fix multiple vulnerabilities and bugs
- MDKSA-2007:196: Updated kernel packages fix multiple vulnerabilities and bugs
- RHSA-2007-0705: Important: kernel security update
- SA25594: Linux Kernel Multiple Vulnerabilities
- SECTRACK ID: 1018211: Linux Kernel cpuset_tasks_read() Memory Disclosure Lets Local Users View Portions of Kernel Memory
- SUSE-SA:2007:053: Linux kernel privilege escalation
- USN-486-1: Linux kernel vulnerabilities
- USN-489-1: Linux kernel vulnerabilities
- USN-510-1: Linux kernel vulnerabilities
- VUPEN/ADV-2007-2105: Linux Kernel Multiple Remote Denial of Service and Information Disclosure Vulnerabilities
Reported:
Jun 07, 2007
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