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Last updated: 11/24/2014 12:27:42 AM

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National Cyber Awareness System

Vulnerability Summary for CVE-2009-3288

Original release date: 09/22/2009
Last revised: 09/14/2011
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 service

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()
External Source: SECUNIA
Name: 37105
External Source: MLIST
Name: [linux-kernel] 20090903 [PATCH] sg: fix oops in the error path in sg_build_indirect()
External Source: MLIST
Name: [linux-kernel] 20090902 [BUG] 2.6.31-rc8 readcd Oops
External Source: UBUNTU
Name: USN-852-1

Technical Details

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