[libav-stable] vmdaudio: fix invalid reads when packet size is not a multiple of chunk size

Anton Khirnov git at libav.org
Fri Mar 8 08:15:13 CET 2013


Module: libav
Branch: master
Commit: f86d66bcfa48998b0727aa0d1089a30cbeae0933

Author:    Anton Khirnov <anton at khirnov.net>
Committer: Anton Khirnov <anton at khirnov.net>
Date:      Wed Mar  6 10:42:51 2013 +0100

vmdaudio: fix invalid reads when packet size is not a multiple of chunk size

CC:libav-stable at libav.org

---

 libavcodec/vmdav.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/libavcodec/vmdav.c b/libavcodec/vmdav.c
index b5b5524..8c6c7d5 100644
--- a/libavcodec/vmdav.c
+++ b/libavcodec/vmdav.c
@@ -627,7 +627,7 @@ static int vmdaudio_decode_frame(AVCodecContext *avctx, void *data,
     /* decode audio chunks */
     if (audio_chunks > 0) {
         buf_end = buf + buf_size;
-        while (buf < buf_end) {
+        while (buf + s->chunk_size <= buf_end) {
             if (s->out_bps == 2) {
                 decode_audio_s16(output_samples_s16, buf, s->chunk_size,
                                  avctx->channels);



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