From 4778407ab3b545c40def7e95a8f9dd4ae92a4e8e Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sat, 17 Aug 2019 19:25:01 +0200 Subject: avcodec/ralf: fix undefined shift in extend_code() Fixes: left shift of negative value -3 Fixes: 16147/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_RALF_fuzzer-5658392722407424 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/ralf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'libavcodec') diff --git a/libavcodec/ralf.c b/libavcodec/ralf.c index d2d803b0d4..75c9371b95 100644 --- a/libavcodec/ralf.c +++ b/libavcodec/ralf.c @@ -220,7 +220,7 @@ static inline int extend_code(GetBitContext *gb, int val, int range, int bits) val -= range; } if (bits) - val = (val << bits) | get_bits(gb, bits); + val = ((unsigned)val << bits) | get_bits(gb, bits); return val; } -- cgit v1.2.3