From: Michael Niedermayer Date: Sat, 6 May 2017 17:11:46 +0000 (+0200) Subject: avcodec/hq_hqa: Fix runtime error: left shift of negative value -207 X-Git-Tag: n3.4~1714 X-Git-Url: http://git.videolan.org/?p=ffmpeg.git;a=commitdiff_plain;h=1283c4244767bd19918f355c31d702a94ee0cc1b;hp=2ef0f392711445e173a56b2c073dedb021ae3783 avcodec/hq_hqa: Fix runtime error: left shift of negative value -207 Fixes: 1375/clusterfuzz-testcase-minimized-6070134701555712 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg Signed-off-by: Michael Niedermayer --- diff --git a/libavcodec/hq_hqa.c b/libavcodec/hq_hqa.c index 5cf5fcfe2b..80dc6b5d40 100644 --- a/libavcodec/hq_hqa.c +++ b/libavcodec/hq_hqa.c @@ -68,11 +68,11 @@ static int hq_decode_block(HQContext *c, GetBitContext *gb, int16_t block[64], memset(block, 0, 64 * sizeof(*block)); if (!is_hqa) { - block[0] = get_sbits(gb, 9) << 6; + block[0] = get_sbits(gb, 9) * 64; q = ff_hq_quants[qsel][is_chroma][get_bits(gb, 2)]; } else { q = ff_hq_quants[qsel][is_chroma][get_bits(gb, 2)]; - block[0] = get_sbits(gb, 9) << 6; + block[0] = get_sbits(gb, 9) * 64; } for (;;) {