[patch 25/40] dell_rbu: use scnprintf() instead of less secure sprintf()

Greg KH
2009-01-23T06:26:20Z

[-- Attachment #1: dell_rbu-use-scnprintf-instead-of-less-secure-sprintf.patch --]
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2.6.27-stable review patch. If anyone has any objections, please let us know.

------------------

From: Pavel Roskin <proski@gnu.org>

commit 81156928f8fe31621e467490b9d441c0285998c3 upstream.

Reading 0 bytes from /sys/devices/platform/dell_rbu/image_type or
/sys/devices/platform/dell_rbu/packet_size by an ordinary user causes an
oops.

Signed-off-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
drivers/firmware/dell_rbu.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/firmware/dell_rbu.c
+++ b/drivers/firmware/dell_rbu.c
@@ -576,7 +576,7 @@ static ssize_t read_rbu_image_type(struc
{
int size = 0;
if (!pos)
- size = sprintf(buffer, "%s\n", image_type);
+ size = scnprintf(buffer, count, "%s\n", image_type);
return size;
}

@@ -648,7 +648,7 @@ static ssize_t read_rbu_packet_size(stru
int size = 0;
if (!pos) {
spin_lock(&rbu_data.lock);
- size = sprintf(buffer, "%lu\n", rbu_data.packetsize);
+ size = scnprintf(buffer, count, "%lu\n", rbu_data.packetsize);
spin_unlock(&rbu_data.lock);
}
return size;