This is a note to let you know that I've just added the patch titled
media: vcodec: Fix potential array out-of-bounds in encoder queue_setup
to the 5.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
media-vcodec-fix-potential-array-out-of-bounds-in-encoder-queue_setup.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From e7f2e65699e2290fd547ec12a17008764e5d9620 Mon Sep 17 00:00:00 2001
From: Wei Chen <harperchen1110@xxxxxxxxx>
Date: Thu, 10 Aug 2023 08:23:33 +0000
Subject: media: vcodec: Fix potential array out-of-bounds in encoder queue_setup
From: Wei Chen <harperchen1110@xxxxxxxxx>
commit e7f2e65699e2290fd547ec12a17008764e5d9620 upstream.
variable *nplanes is provided by user via system call argument. The
possible value of q_data->fmt->num_planes is 1-3, while the value
of *nplanes can be 1-8. The array access by index i can cause array
out-of-bounds.
Fix this bug by checking *nplanes against the array size.
Fixes: 4e855a6efa54 ("[media] vcodec: mediatek: Add Mediatek V4L2 Video Encoder Driver")
Signed-off-by: Wei Chen <harperchen1110@xxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Reviewed-by: Chen-Yu Tsai <wenst@xxxxxxxxxxxx>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/media/platform/mtk-vcodec/mtk_vcodec_enc.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc.c
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc.c
@@ -759,6 +759,8 @@ static int vb2ops_venc_queue_setup(struc
return -EINVAL;
if (*nplanes) {
+ if (*nplanes != q_data->fmt->num_planes)
+ return -EINVAL;
for (i = 0; i < *nplanes; i++)
if (sizes[i] < q_data->sizeimage[i])
return -EINVAL;
Patches currently in stable-queue which might be from harperchen1110@xxxxxxxxx are
queue-5.4/media-vcodec-fix-potential-array-out-of-bounds-in-encoder-queue_setup.patch
