From ba150051322c02e24c004bd5309468886e1e5ab6 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sat, 4 Mar 2017 04:55:15 +0100 Subject: avcodec/wavpack: Fix runtime error: left shift of negative value -2 Fixes: 723/clusterfuzz-testcase-6471394663596032 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/wavpack.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'libavcodec/wavpack.c') diff --git a/libavcodec/wavpack.c b/libavcodec/wavpack.c index bf538a9b87..a4ba07fc83 100644 --- a/libavcodec/wavpack.c +++ b/libavcodec/wavpack.c @@ -745,13 +745,13 @@ static int wavpack_decode_block(AVCodecContext *avctx, int block_no, } for (i = 0; i < weights; i++) { t = (int8_t)bytestream2_get_byte(&gb); - s->decorr[s->terms - i - 1].weightA = t << 3; + s->decorr[s->terms - i - 1].weightA = t * (1 << 3); if (s->decorr[s->terms - i - 1].weightA > 0) s->decorr[s->terms - i - 1].weightA += (s->decorr[s->terms - i - 1].weightA + 64) >> 7; if (s->stereo_in) { t = (int8_t)bytestream2_get_byte(&gb); - s->decorr[s->terms - i - 1].weightB = t << 3; + s->decorr[s->terms - i - 1].weightB = t * (1 << 3); if (s->decorr[s->terms - i - 1].weightB > 0) s->decorr[s->terms - i - 1].weightB += (s->decorr[s->terms - i - 1].weightB + 64) >> 7; -- cgit v1.2.1