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List:       oss-security
Subject:    Re: [oss-security] CVE request: kernel: NULL pointer dereference in
From:       "Steven M. Christey" <coley () linus ! mitre ! org>
Date:       2009-09-22 7:21:19
Message-ID: Pine.GSO.4.51.0909220321110.16381 () faron ! mitre ! org
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======================================================
Name: CVE-2009-3288
Status: Candidate
URL: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-3288
Reference: MLIST:[linux-kernel] 20090902 [BUG] 2.6.31-rc8 readcd Oops
Reference: URL:http://lkml.org/lkml/2009/9/3/1
Reference: MLIST:[linux-kernel] 20090903 [PATCH] sg: fix oops in the error path in sg_build_indirect()
Reference: URL:http://lkml.org/lkml/2009/9/3/107
Reference: MLIST:[oss-security] 20090904 CVE request: kernel: NULL pointer dereference in sg_build_indirect()
Reference: URL:http://www.openwall.com/lists/oss-security/2009/09/03/4

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.


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