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[PATCH 4.4 118/342] [media] si2157: return -EINVAL if firmware blob is too big

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  [PATCH 4.4 118/342] [media] si2157: return -EINVAL if firmware blob is too big Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-03-02 02:20 +0100

#1347437 — [PATCH 4.4 118/342] [media] si2157: return -EINVAL if firmware blob is too big

4.4-stable review patch.  If anyone has any objections, please let me know.

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

From: Laura Abbott <labbott@fedoraproject.org>

commit d2cc2f0b35465951eaaf0387fd55e29835ed7ea6 upstream.

A previous patch added a check if the firmware is too big, but it didn't
set the return error code with the right value.

[mchehab@osg.samsung.com: I ended by applying a v1 of Laura's patch, without
 the proper return code. This patch contains the difference between v2 and v1 of
 the Laura's "si2157: Bounds check firmware" patch]
Signed-off-by: Laura Abbott <labbott@fedoraproject.org>
Reviewed-by: Olli Salonen <olli.salonen@iki.fi>
Tested-by: Olli Salonen <olli.salonen@iki.fi>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

---
 drivers/media/tuners/si2157.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/media/tuners/si2157.c
+++ b/drivers/media/tuners/si2157.c
@@ -168,6 +168,7 @@ static int si2157_init(struct dvb_fronte
 		len = fw->data[fw->size - remaining];
 		if (len > SI2157_ARGLEN) {
 			dev_err(&client->dev, "Bad firmware length\n");
+			ret = -EINVAL;
 			goto err_release_firmware;
 		}
 		memcpy(cmd.args, &fw->data[(fw->size - remaining) + 1], len);

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