avcodec/smacker: Check input before allocation

Fixes: Timeout Fixes: 421650030/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SMACKAUD_fuzzer-6144441767493632

Michael Niedermayer committed 1 year ago

Commit af3852e1 parent 9899c8c1 file · +4 −0Browse files

Unified · Split

@@ -662,6 +662,10 @@ static int smka_decode_frame(AVCodecContext avctx, AVFrame frame, · 661 unmodified lines
662	662	} else
663	663	values[i] = h.entries[0].value;
664	664	}
	665	+ if (get_bits_left(&gb) < (stereo+1) * (bits+1) * 8) {
	666	+ ret = AVERROR_INVALIDDATA;
	667	+ goto error;
	668	+ }
665	669
666	670	if ((ret = ff_get_buffer(avctx, frame, 0)) < 0)
667	671	return ret;

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