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avcodec/dxv: Check remaining space in CHECKPOINT()

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Fixes: Timeout (77sec -> 1sec)
Fixes: 13407/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DXV_fuzzer-5093143018471424

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 2019-03-20 22:29:21 +01:00
parent 0ac3befd47
commit 4daec0c677
1 changed files with 2 additions and 0 deletions
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2
libavcodec/dxv.c
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@ -256,6 +256,8 @@ static int decompress_texture_thread(AVCodecContext *avctx, void *arg,
#define CHECKPOINT(x) \
do { \
if (state == 0) { \
if (bytestream2_get_bytes_left(gbc) < 4) \
return AVERROR_INVALIDDATA; \
value = bytestream2_get_le32(gbc); \
state = 16; \
} \