From c535436cbeeab89be64e9f3fd652bc736f2f3245 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sat, 6 May 2017 12:05:17 +0200 Subject: [PATCH] avcodec/mlpdec: Fix runtime error: left shift of negative value -22 Fixes: 1355/clusterfuzz-testcase-minimized-6662205472768000 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/mlpdec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/mlpdec.c b/libavcodec/mlpdec.c index c93b058dd7..7cad5d1cad 100644 --- a/libavcodec/mlpdec.c +++ b/libavcodec/mlpdec.c @@ -264,7 +264,7 @@ static inline int read_huff_channels(MLPDecodeContext *m, GetBitContext *gbp, result = (result << lsb_bits) + get_bits(gbp, lsb_bits); result += cp->sign_huff_offset; - result <<= quant_step_size; + result *= 1 << quant_step_size; m->sample_buffer[pos + s->blockpos][channel] = result; }