avcodec/wnv1: clear padding area of rbuf

Fixes use of uninitialized memory Fixes: msan_uninit-mem_7faa48586020_2145_MAILTEST.AVI Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by: Michael Niedermayer <[email protected]>
SaschaVasarrhelyi · Dec 26, 2013 · 14bec7d · 14bec7d
1 parent ec73bd1
commit 14bec7d
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/libavcodec/wnv1.c b/libavcodec/wnv1.c
@@ -78,6 +78,7 @@ static int decode_frame(AVCodecContext *avctx,
         av_log(avctx, AV_LOG_ERROR, "Cannot allocate temporary buffer\n");
         return AVERROR(ENOMEM);
     }
+    memset(rbuf + buf_size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
 
     if ((ret = ff_get_buffer(avctx, p, 0)) < 0) {
         av_free(rbuf);