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avcodec/hevc_mp4toannexb_bsf: Avoid NULL memcpy()

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Fixes: invalid memcpy use
Fixes: 19299/clusterfuzz-testcase-minimized-ffmpeg_BSF_HEVC_MP4TOANNEXB_fuzzer-5169193398042624

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 1e23b5a706)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2019-12-13 00:38:29 +01:00
parent 831ac9ad46
commit a0d0e9b245
1 changed files with 1 additions and 1 deletions
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libavcodec/hevc_mp4toannexb_bsf.c
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@ -164,7 +164,7 @@ static int hevc_mp4toannexb_filter(AVBSFContext *ctx, AVPacket *out)
if (ret < 0)
goto fail;
if (add_extradata)
if (extra_size)
memcpy(out->data + prev_size, ctx->par_out->extradata, extra_size);
AV_WB32(out->data + prev_size + extra_size, 1);
bytestream2_get_buffer(&gb, out->data + prev_size + 4 + extra_size, nalu_size);