avformat/wavdec: Check that smv block fits in available space
Fixes: OOM Fixes: 56271/clusterfuzz-testcase-minimized-ffmpeg_dem_WAV_fuzzer-5290810045497344 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 a76efafdb9be966ae3ad52b32370dc644dd582bf) Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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@ -662,6 +662,10 @@ smv_retry:
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goto smv_out;
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goto smv_out;
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}
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}
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size = avio_rl24(s->pb);
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size = avio_rl24(s->pb);
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if (size > wav->smv_block_size) {
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ret = AVERROR_EOF;
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goto smv_out;
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}
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ret = av_get_packet(s->pb, pkt, size);
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ret = av_get_packet(s->pb, pkt, size);
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if (ret < 0)
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if (ret < 0)
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goto smv_out;
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goto smv_out;
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