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avcodec/dxv: Check for end of input in dxv_decompress_dxt5()

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Fixes: Timeout
Fixes: 3291/clusterfuzz-testcase-4630024655208448

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2017-09-30 18:54:07 +02:00
parent 44874b4f5e
commit d662143f06
1 changed files with 2 additions and 0 deletions
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2
libavcodec/dxv.c
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@ -197,6 +197,8 @@ static int dxv_decompress_dxt5(AVCodecContext *avctx)
AV_WL32(ctx->tex_data + 4 * pos, prev);
pos++;
} else {
if (bytestream2_get_bytes_left(gbc) < 1)
return AVERROR_INVALIDDATA;
if (state == 0) {
value = bytestream2_get_le32(gbc);
state = 16;