ipr: Fix out-of-bounds null overwrite

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commit d63c7dd5bc upstream.

Return value of snprintf is not bound by size value, 2nd argument.
(https://www.kernel.org/doc/htmldocs/kernel-api/API-snprintf.html).
Return value is number of printed chars, can be larger than 2nd
argument.  Therefore, it can write null byte out of bounds ofbuffer.
Since snprintf puts null, it does not need to put additional null byte.

Signed-off-by: Insu Yun <wuninsu@gmail.com>
Reviewed-by: Shane Seymour <shane.seymour@hpe.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Cc: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Insu Yun 2016-01-06 12:44:01 -05:00 • committed by Greg Kroah-Hartman

parent 91b95d59aa

commit a918d2bcea

1 changed files with 2 additions and 3 deletions

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drivers/scsi/ipr.c

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