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avcodec/wmalosslessdec: Fix null pointer dereference in decode_frame()

Fixes: 2018_03_23_poc.wav
Found-by: GwanYeong Kim <gy741.kim@gmail.com>

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
tags/n4.0
Michael Niedermayer 7 years ago
parent
commit
ea15915b2d
1 changed files with 3 additions and 1 deletions
  1. +3
    -1
      libavcodec/wmalosslessdec.c

+ 3
- 1
libavcodec/wmalosslessdec.c View File

@@ -1256,7 +1256,9 @@ static int decode_packet(AVCodecContext *avctx, void *data, int *got_frame_ptr,
(frame_size = show_bits(gb, s->log2_frame_size)) &&
frame_size <= remaining_bits(s, gb)) {
save_bits(s, gb, frame_size, 0);
s->packet_done = !decode_frame(s);

if (!s->packet_loss)
s->packet_done = !decode_frame(s);
} else if (!s->len_prefix
&& s->num_saved_bits > get_bits_count(&s->gb)) {
/* when the frames do not have a length prefix, we don't know the


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