From 6c3a63fc3d1be7ac947e38a165a299c9e5d37764 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sun, 28 May 2017 03:34:09 +0200 Subject: avcodec/aacdec_fixed: Fix multiple runtime error: shift exponent 127 is too large for 32-bit type 'int' Fixes: 1851/clusterfuzz-testcase-minimized-5692607495667712 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/aacdec_fixed.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'libavcodec') diff --git a/libavcodec/aacdec_fixed.c b/libavcodec/aacdec_fixed.c index 53a971c8d3..950ce20f80 100644 --- a/libavcodec/aacdec_fixed.c +++ b/libavcodec/aacdec_fixed.c @@ -370,7 +370,9 @@ static void apply_dependent_coupling_fixed(AACContext *ac, shift = (gain-1024) >> 3; } - if (shift < 0) { + if (shift < -31) { + // Nothing to do + } else if (shift < 0) { shift = -shift; round = 1 << (shift - 1); -- cgit v1.2.1