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avcodec/aacenc: Check both channels for finiteness

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Fixes null pointer dereference
Fixes: 10412fc52ecc6eab40ed67f82ca7b372/signal_sigsegv_2618c99_2129_f808373959e46afb165593332799ffbc.aif

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 057549a9cc)

Conflicts:

	libavcodec/aacenc.c
This commit is contained in:
Michael Niedermayer 2016-01-16 18:32:07 +01:00
parent d1fc87529f
commit b515a23f76
1 changed files with 10 additions and 2 deletions
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12
libavcodec/aacenc.c
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@ -567,8 +567,16 @@ static int aac_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
ics->group_len[w] = wi[ch].grouping[w];
apply_window_and_mdct(s, &cpe->ch[ch], overlap);
if (isnan(cpe->ch->coeffs[0])) {
av_log(avctx, AV_LOG_ERROR, "Input contains NaN\n");
if (isnan(cpe->ch[ch].coeffs[ 0]) || isinf(cpe->ch[ch].coeffs[ 0]) ||
isnan(cpe->ch[ch].coeffs[ 128]) || isinf(cpe->ch[ch].coeffs[ 128]) ||
isnan(cpe->ch[ch].coeffs[2*128]) || isinf(cpe->ch[ch].coeffs[2*128]) ||
isnan(cpe->ch[ch].coeffs[3*128]) || isinf(cpe->ch[ch].coeffs[3*128]) ||
isnan(cpe->ch[ch].coeffs[4*128]) || isinf(cpe->ch[ch].coeffs[4*128]) ||
isnan(cpe->ch[ch].coeffs[5*128]) || isinf(cpe->ch[ch].coeffs[5*128]) ||
isnan(cpe->ch[ch].coeffs[6*128]) || isinf(cpe->ch[ch].coeffs[6*128]) ||
isnan(cpe->ch[ch].coeffs[7*128]) || isinf(cpe->ch[ch].coeffs[7*128])) {
av_log(avctx, AV_LOG_ERROR, "Input contains NaN/+-Inf\n");
return AVERROR(EINVAL);
}
}