National Cyber Awareness System

Vulnerability Summary for CVE-2008-7256

Overview

mm/shmem.c in the Linux kernel before 2.6.28-rc8, when strict overcommit is enabled and CONFIG_SECURITY is disabled, does not properly handle the export of shmemfs objects by knfsd, which allows attackers to cause a denial of service (NULL pointer dereference and knfsd crash) or possibly have unspecified other impact via unknown vectors. NOTE: this vulnerability exists because of an incomplete fix for CVE-2010-1643.

Impact

CVSS Severity (version 2.0):

CVSS Version 2 Metrics:

References to Advisories, Solutions, and Tools

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External Source: CONFIRM

Name: https://bugzilla.redhat.com/show_bug.cgi?id=595970

Hyperlink:https://bugzilla.redhat.com/show_bug.cgi?id=595970

External Source: XF

Name: kernel-shmem-dos(59224)

Hyperlink:http://xforce.iss.net/xforce/xfdb/59224

External Source: MLIST

Name: [oss-security] 20100527 Re: CVE request - kernel: nfsd: fix vm overcommit crash

Hyperlink:http://www.openwall.com/lists/oss-security/2010/05/27/1

External Source: MANDRIVA

Name: MDVSA-2010:198

Hyperlink:http://www.mandriva.com/security/advisories?name=MDVSA-2010:198

External Source: CONFIRM

Name: http://www.kernel.org/pub/linux/kernel/v2.6/testing/v2.6.28/ChangeLog-2.6.28-rc8

Hyperlink:http://www.kernel.org/pub/linux/kernel/v2.6/testing/v2.6.28/ChangeLog-2.6.28-rc8

External Source: CONFIRM

Name: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=1b79cd04fab80be61dcd2732e2423aafde9a4c1c

Hyperlink:http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=1b79cd04fab80be61dcd2732e2423aafde9a4c1c