National Cyber Awareness System

Vulnerability Summary for CVE-2011-2689

Overview

The gfs2_fallocate function in fs/gfs2/file.c in the Linux kernel before 3.0-rc1 does not ensure that the size of a chunk allocation is a multiple of the block size, which allows local users to cause a denial of service (BUG and system crash) by arranging for all resource groups to have too little free space.

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=720861

Type: Patch Information

Hyperlink:https://bugzilla.redhat.com/show_bug.cgi?id=720861

External Source: MLIST

Name: [oss-security] 20110713 CVE-2011-2689 kernel: gfs2: make sure fallocate bytes is a multiple of blksize

Type: Patch Information

Hyperlink:http://www.openwall.com/lists/oss-security/2011/07/13/1

External Source: CONFIRM

Name: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=6905d9e4dda6112f007e9090bca80507da158e63

Type: Patch Information

Hyperlink:http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=6905d9e4dda6112f007e9090bca80507da158e63

External Source: XF

Name: linux-kernel-gfs2-dos(68557)

Hyperlink:http://xforce.iss.net/xforce/xfdb/68557

External Source: BID

Name: 48677

Hyperlink:http://www.securityfocus.com/bid/48677

External Source: CONFIRM

Name: http://www.kernel.org/pub/linux/kernel/v3.0/testing/ChangeLog-3.0-rc1

Hyperlink:http://www.kernel.org/pub/linux/kernel/v3.0/testing/ChangeLog-3.0-rc1

External Source: SECTRACK

Name: 1025776

Hyperlink:http://securitytracker.com/id?1025776

External Source: SECUNIA

Name: 45193

Type: Advisory

Hyperlink:http://secunia.com/advisories/45193