This fixes a heap-buffer-overflow detected by AddressSanitizer.
Signed-off-by: Andreas Cadhalpun <andreas.cadhal...@googlemail.com>
---
libavcodec/smvjpegdec.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/libavcodec/smvjpegdec.c b/libavcodec/smvjpegdec.c
index 9057e86..e319e57 100644
--- a/libavcodec/smvjpegdec.c
+++ b/libavcodec/smvjpegdec.c
@@ -152,6 +152,10 @@ static int smvjpeg_decode_frame(AVCodecContext *avctx,
void *data, int *data_siz
cur_frame = avpkt->pts % s->frames_per_jpeg;
+ /* cur_frame is later used to calculate the buffer offset, so it mustn't
be negative */
+ if (cur_frame < 0)
+ cur_frame += s->frames_per_jpeg;
+
/* Are we at the start of a block? */
if (!cur_frame) {
av_frame_unref(mjpeg_data);
--
2.10.2
_______________________________________________
ffmpeg-devel mailing list
ffmpeg-devel@ffmpeg.org
http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
