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.
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
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.
Consequences:
Denial of Service
References:
- rPSA-2008-0207, rPath Security Advisory 2008-0207-1 at http://wiki.rpath.com/wiki/Advisories:rPSA-2008-0207.
- The Linux Kernel Archives Web site, The Linux Kernel Archives at http://www.kernel.org/.
- The Linux Kernel Archives Web site, ChangeLog-2.6.25.9 at http://kernel.org/pub/linux/kernel/v2.6/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
Reported:
Jun 24, 2008
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