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Unsigned Integer Overflow in InitSegmentBitfield()

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Bug: 112662995
Test: atest DecoderTestXheAac ; atest DecoderTestAacDrc
Change-Id: Ida3b1d49dc35a03a3ff02f6e150cfb55e9e1da11
This commit is contained in:
Fraunhofer IIS FDK
2018-06-29 16:34:55 +02:00
committed by Jean-Michel Trivi
parent f59fd73d44
commit 950d8efb1a
1 changed files with 4 additions and 1 deletions
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5
libAACdec/src/aacdec_hcrs.cpp
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@@ -367,7 +367,10 @@ static UINT InitSegmentBitfield(UINT *pNumSegment,
UINT tempWord;
USHORT numValidSegment;
*pNumWordForBitfield = ((*pNumSegment - 1) >> THIRTYTWO_LOG_DIV_TWO_LOG) + 1;
*pNumWordForBitfield =
(*pNumSegment == 0)
? 0
: ((*pNumSegment - 1) >> THIRTYTWO_LOG_DIV_TWO_LOG) + 1;
/* loop over all words, which are completely used or only partial */
/* bit in pSegmentBitfield is zero if segment is empty; bit in