Linux kernel get_user_pages function denial of service
| linux-kernel-getuserpages-dos (43550) |  Low Risk |
Description:
The Linux kernel is vulnerable to a denial of service, caused by an error in the get_user_pages function. A local attacker could exploit this vulnerability using a large number of calls to allocate newly zeroed pages resulting in a denial of service.
*CVSS:
| Base Score: | 2.1 |
| Access Vector: | Local |
| Access Complexity: | Low |
| Authentication: | None |
| Confidentiality Impact: | None |
| Integrity Impact: | None |
| Availability Impact: | Partial |
| Temporal Score: | 1.6 |
| Exploitability: | Unproven |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Denial of Service
Remedy:
Upgrade to the latest version of the Linux kernel (2.6.25.9 or later), available from The Linux Kernel Archives Web site. See References.
References:
- rPSA-2008-0207: rPath Security Advisory 2008-0207-1.
- The Linux Kernel Archives Web site: The Linux Kernel Archives.
- The Linux Kernel Archives Web site: ChangeLog-2.6.25.9.
- CVE-2008-2372: The Linux kernel 2.6.24 and 2.6.25 before 2.6.25.9 allows local users to cause a denial of service (memory consumption) via a large number of calls to the get_user_pages function, which lacks a ZERO_PAGE optimization and results in allocation of useless newly zeroed pages.
- RHSA-2008-0585: Important: kernel security and bug fix update
- RHSA-2008-0957: Important: kernel security and bug fix update
- SUSE-SA:2008:035: Linux kernel update
- SUSE-SA:2008:037: Linux kernel security update
- SUSE-SA:2008:038: Linux kernel security update
- USN-659-1: Linux kernel vulnerabilities
Platforms Affected:
- Canonical Ubuntu 6.06 LTS
- Canonical Ubuntu 7.10
- Canonical Ubuntu 8.04 LTS
- Linux Kernel 2.6.24
- Linux Kernel 2.6.25
- Novell OpenSUSE 11.0
- Novell SLE SDK 10 SP2
- Novell SUSE Linux Enterprise 10 SP2 DEBUGINFO
- Novell SUSE Linux Enterprise Desktop 10 SP2
- Novell SUSE Linux Enterprise Server 10 SP2
- RedHat Enterprise Linux 4 WS
- RedHat Enterprise Linux 5
- RedHat Enterprise Linux 5 Client
- RedHat Linux Advanced Workstation 2.1 Itanium
Reported:
Jun 24, 2008
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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 IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.