From db440b6f06ffb81be3eb9971a76d5325284a21a4 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Tue, 27 Jun 2017 13:47:32 +0200 Subject: [PATCH] avcodec/wavpack: Fix invalid shift Fixes: runtime error: left shift of 1 by 31 places cannot be represented in type 'int' Fixes: 2377/clusterfuzz-testcase-minimized-6108505935183872 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer (cherry picked from commit c07af720984acaafaa273369080b458d73975775) Signed-off-by: Michael Niedermayer --- libavcodec/wavpack.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/libavcodec/wavpack.c b/libavcodec/wavpack.c index 58035b99e1..fd11580325 100644 --- a/libavcodec/wavpack.c +++ b/libavcodec/wavpack.c @@ -835,9 +835,9 @@ static int wavpack_decode_block(AVCodecContext *avctx, int block_no, continue; } bytestream2_get_buffer(&gb, val, 4); - if (val[0] > 31) { + if (val[0] > 30) { av_log(avctx, AV_LOG_ERROR, - "Invalid INT32INFO, extra_bits = %d (> 32)\n", val[0]); + "Invalid INT32INFO, extra_bits = %d (> 30)\n", val[0]); continue; } else if (val[0]) { s->extra_bits = val[0];