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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2019-04-24 12:46:27 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-01-29 12:21:43 +0300 |
| commit | 7aa9ac350e773146592920099f0613883e4a7abd (patch) | |
| tree | bc6ce1aef9bf27f8bb79abc9944d53f243759057 | |
| parent | 92c81b011775600c665ce0d9b0cb576c4c62b65b (diff) | |
| download | linux-7aa9ac350e773146592920099f0613883e4a7abd.tar.xz | |
media: davinci/vpbe: array underflow in vpbe_enum_outputs()
[ Upstream commit b72845ee5577b227131b1fef23f9d9a296621d7b ]
In vpbe_enum_outputs() we check if (temp_index >= cfg->num_outputs) but
the problem is that "temp_index" can be negative. This patch changes
the types to unsigned to address this array underflow bug.
Fixes: 66715cdc3224 ("[media] davinci vpbe: VPBE display driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: "Lad, Prabhakar" <prabhakar.csengg@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/media/platform/davinci/vpbe.c | 2 | ||||
| -rw-r--r-- | include/media/davinci/vpbe.h | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/drivers/media/platform/davinci/vpbe.c b/drivers/media/platform/davinci/vpbe.c index abce9c4a1a8e..59518c08528b 100644 --- a/drivers/media/platform/davinci/vpbe.c +++ b/drivers/media/platform/davinci/vpbe.c @@ -130,7 +130,7 @@ static int vpbe_enum_outputs(struct vpbe_device *vpbe_dev, struct v4l2_output *output) { struct vpbe_config *cfg = vpbe_dev->cfg; - int temp_index = output->index; + unsigned int temp_index = output->index; if (temp_index >= cfg->num_outputs) return -EINVAL; diff --git a/include/media/davinci/vpbe.h b/include/media/davinci/vpbe.h index 4376beeb28c2..5d8ceeddc797 100644 --- a/include/media/davinci/vpbe.h +++ b/include/media/davinci/vpbe.h @@ -96,7 +96,7 @@ struct vpbe_config { struct encoder_config_info *ext_encoders; /* amplifier information goes here */ struct amp_config_info *amp; - int num_outputs; + unsigned int num_outputs; /* Order is venc outputs followed by LCD and then external encoders */ struct vpbe_output *outputs; }; |