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eacmv: check for out of bound reads

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Signed-off-by: Janne Grunau <janne-libav@jannau.net>
(cherry picked from commit 46cb2f6a29)

Signed-off-by: Anton Khirnov <anton@khirnov.net>
This commit is contained in:
Laurent Aimar 2011-09-30 23:42:32 +00:00 committed by Reinhard Tartler
parent 34d6f22a57
commit d75c80e942
1 changed files with 3 additions and 0 deletions
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3
libavcodec/eacmv.c
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@ -153,6 +153,9 @@ static int cmv_decode_frame(AVCodecContext *avctx,
CmvContext *s = avctx->priv_data;
const uint8_t *buf_end = buf + buf_size;
if (buf_end - buf < EA_PREAMBLE_SIZE)
return AVERROR_INVALIDDATA;
if (AV_RL32(buf)==MVIh_TAG||AV_RB32(buf)==MVIh_TAG) {
cmv_process_header(s, buf+EA_PREAMBLE_SIZE, buf_end);
return buf_size;