[FFmpeg-cvslog] wnv1: Make sure the input packet is large enough

[Martin Storsjö]

ffmpeg | branch: master | Martin Storsjö <martin at martin.st> | Fri Sep 20 00:07:34 2013 +0300| [91be1103fd1f79d381edf268c32f4166b6c3b6d8] | committer: Martin Storsjö

wnv1: Make sure the input packet is large enough

Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable at libav.org
Signed-off-by: Martin Storsjö <martin at martin.st>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=91be1103fd1f79d381edf268c32f4166b6c3b6d8
---

 libavcodec/wnv1.c |    5 +++++
 1 file changed, 5 insertions(+)

diff --git a/libavcodec/wnv1.c b/libavcodec/wnv1.c
index 418c5f7..13a875e 100644
--- a/libavcodec/wnv1.c
+++ b/libavcodec/wnv1.c
@@ -70,6 +70,11 @@ static int decode_frame(AVCodecContext *avctx,
     int prev_y = 0, prev_u = 0, prev_v = 0;
     uint8_t *rbuf;
 
+    if (buf_size < 8) {
+        av_log(avctx, AV_LOG_ERROR, "Packet is too short\n");
+        return AVERROR_INVALIDDATA;
+    }
+
     rbuf = av_malloc(buf_size + FF_INPUT_BUFFER_PADDING_SIZE);
     if (!rbuf) {
         av_log(avctx, AV_LOG_ERROR, "Cannot allocate temporary buffer\n");