National Vulnerability Database (NVD) National Vulnerability Database (CVE-2009-3288)

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Last updated: Mon Nov 23 09:46:19 EST 2009

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Vulnerability Summary for CVE-2009-3288

Original release date:09/22/2009

Last revised:09/23/2009

Source: US-CERT/NIST

Overview

The sg_build_indirect function in drivers/scsi/sg.c in Linux kernel 2.6.28-rc1 through 2.6.31-rc8 uses an incorrect variable when accessing an array, which allows local users to cause a denial of service (kernel OOPS and NULL pointer dereference), as demonstrated by using xcdroast to duplicate a CD. NOTE: this is only exploitable by users who can open the cdrom device.

Impact

CVSS Severity (version 2.0):

CVSS v2 Base Score:4.9 (MEDIUM) (AV:L/AC:L/Au:N/C:N/I:N/A:C) (legend)

Impact Subscore: 6.9

Exploitability Subscore: 3.9

CVSS Version 2 Metrics:

Access Vector: Locally exploitable

Access Complexity: Low

Authentication: Not required to exploit

Impact Type:Allows disruption of serviceUnknown

Vendor Statements (disclaimer)

Official Statement from Red Hat (09/22/2009)

Not vulnerable. This issue did not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 3, 4, 5 or Red Hat Enterprise MRG. This issue was introduced by upstream commit 10db10d1, and only affected kernels version 2.6.28-rc1 and later.

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External Source: MLIST

Name: [oss-security] 20090904 CVE request: kernel: NULL pointer dereference in sg_build_indirect()

Hyperlink:http://www.openwall.com/lists/oss-security/2009/09/03/4

External Source: MLIST

Name: [linux-kernel] 20090903 [PATCH] sg: fix oops in the error path in sg_build_indirect()

Hyperlink:http://lkml.org/lkml/2009/9/3/107

External Source: MLIST

Name: [linux-kernel] 20090902 [BUG] 2.6.31-rc8 readcd Oops

Hyperlink:http://lkml.org/lkml/2009/9/3/1