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| author | Carl Eugen Hoyos <cehoyos@ag.or.at> | 2013-09-02 08:32:24 +0200 |
|---|---|---|
| committer | Carl Eugen Hoyos <cehoyos@ag.or.at> | 2013-09-02 08:32:24 +0200 |
| commit | ec8a4841f7e81040f9a2757f23e70dff5e6b33a4 (patch) | |
| tree | 781824d1aa3331c744f27e398322428d1ea73959 /libavcodec/wmadec.c | |
| parent | cdd5df8189ff1537f7abe8defe971f80602cc2d2 (diff) | |
| download | ffmpeg-ec8a4841f7e81040f9a2757f23e70dff5e6b33a4.tar.gz | |
Avoid a deadlock when decoding wma.
Fixes ticket #2925.
Diffstat (limited to 'libavcodec/wmadec.c')
| -rw-r--r-- | libavcodec/wmadec.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/libavcodec/wmadec.c b/libavcodec/wmadec.c index d46eb33c41..8fc0cca807 100644 --- a/libavcodec/wmadec.c +++ b/libavcodec/wmadec.c @@ -512,6 +512,10 @@ static int wma_decode_block(WMACodecContext *s) coef escape coding */ total_gain = 1; for(;;) { + if (get_bits_left(&s->gb) < 7) { + av_log(s->avctx, AV_LOG_ERROR, "total_gain overread\n"); + return AVERROR_INVALIDDATA; + } a = get_bits(&s->gb, 7); total_gain += a; if (a != 127) |