From 2c3bcf6bf2381f214d834bf71eb5b79caac08e7d Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Thu, 1 Jun 2017 18:48:37 +0200 Subject: [PATCH] avcodec/wavpack: Fix runtime error: shift exponent 32 is too large for 32-bit type 'int' Fixes: 1967/clusterfuzz-testcase-minimized-5757031199801344 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer (cherry picked from commit 8b3e580b7f436206e84dac89415e057fa9abdab8) 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 9ce074d975..e55cd82595 100644 --- a/libavcodec/wavpack.c +++ b/libavcodec/wavpack.c @@ -184,7 +184,7 @@ static int wv_get_value(WavpackFrameContext *ctx, GetBitContext *gb, goto error; t += t2; } else { - if (get_bits_left(gb) < t2 - 1) + if (t2 >= 32 || get_bits_left(gb) < t2 - 1) goto error; t += get_bits_long(gb, t2 - 1) | (1 << (t2 - 1)); }