| From | Greg Kroah-Hartman <> | Subject | [PATCH 3.10 34/89] [media] s5h1420: fix a buffer overflow when checking userspace params | Date | Fri, 31 Jul 2015 12:41:16 -0700 |
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3.10-stable review patch. If anyone has any objections, please let me know.
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From: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
commit 12f4543f5d6811f864e6c4952eb27253c7466c02 upstream.
The maximum size for a DiSEqC command is 6, according to the userspace API. However, the code allows to write up to 7 values: drivers/media/dvb-frontends/s5h1420.c:193 s5h1420_send_master_cmd() error: buffer overflow 'cmd->msg' 6 <= 7
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/media/dvb-frontends/s5h1420.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/media/dvb-frontends/s5h1420.c +++ b/drivers/media/dvb-frontends/s5h1420.c @@ -180,7 +180,7 @@ static int s5h1420_send_master_cmd (stru int result = 0; dprintk("enter %s\n", __func__); - if (cmd->msg_len > 8) + if (cmd->msg_len > sizeof(cmd->msg)) return -EINVAL; /* setup for DISEQC */
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