From 7cebc5a9ccba0de7bddf7900ae85652ebc66141c Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Mon, 13 Mar 2017 02:51:15 +0100 Subject: [PATCH] avcodec/wavpack: Fix runtime error: shift exponent 32 is too large for 32-bit type 'int' Fixes: 822/clusterfuzz-testcase-4873433189974016 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/wavpack.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/wavpack.c b/libavcodec/wavpack.c index 943e46a25c..bc94b27c04 100644 --- a/libavcodec/wavpack.c +++ b/libavcodec/wavpack.c @@ -846,7 +846,7 @@ static int wavpack_decode_block(AVCodecContext *avctx, int block_no, continue; } bytestream2_get_buffer(&gb, val, 4); - if (val[0] > 32) { + if (val[0] > 31) { av_log(avctx, AV_LOG_ERROR, "Invalid INT32INFO, extra_bits = %d (> 32)\n", val[0]); continue;