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avcodec/takdec: Check remaining space for first predictors

Fixes: Timeout Fixes: 403673829/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TAK_fuzzer-5498240154009600

Michael Niedermayer committed 1 year ago

Commit 8e6db871 parent 4a9d9071 file · +3 −0Browse files

Unified · Split

libavcodec/takdec.c+3−0
@@ -434,6 +434,9 @@ static int decode_subframe(TAKDecContext *s, int32_t *decoded, · 433 unmodified lines
434 return AVERROR_INVALIDDATA;434 return AVERROR_INVALIDDATA;
435 }435 }
436 436
437 if (get_bits_left(gb) < 2*10 + 2*size)
438 return AVERROR_INVALIDDATA;
439
437 s->predictors[0] = get_sbits(gb, 10);440 s->predictors[0] = get_sbits(gb, 10);
438 s->predictors[1] = get_sbits(gb, 10);441 s->predictors[1] = get_sbits(gb, 10);
439 s->predictors[2] = get_sbits(gb, size) * (1 << (10 - size));442 s->predictors[2] = get_sbits(gb, size) * (1 << (10 - size));

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