Null pointer dereference

2009-09-2210:30:00

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6.5 Medium

AI Score

Confidence

High

4.9 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:L/AC:L/Au:N/C:N/I:N/A:C

0.0004 Low

EPSS

Percentile

8.0%

JSON

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.

CPENameOperatorVersion
linux_kerneleq2.6.28-rc1
linux_kerneleq2.6.31-rc6
linux_kerneleq2.6.31-rc10
linux_kerneleq2.6.31-rc4
linux_kerneleq2.6.31-rc5
linux_kerneleq2.6.31-rc3
linux_kerneleq2.6.31-rc8
linux_kerneleq2.6.31-rc2
linux_kerneleq2.6.31-rc9
linux_kerneleq2.6.31-rc7

Name	Operator	Version
linux_kernel	eq	2.6.28-rc1
linux_kernel	eq	2.6.31-rc6
linux_kernel	eq	2.6.31-rc10
linux_kernel	eq	2.6.31-rc4
linux_kernel	eq	2.6.31-rc5
linux_kernel	eq	2.6.31-rc3
linux_kernel	eq	2.6.31-rc8
linux_kernel	eq	2.6.31-rc2
linux_kernel	eq	2.6.31-rc9
linux_kernel	eq	2.6.31-rc7