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authorMichael Niedermayer <michael@niedermayer.cc>2017-05-06 15:17:29 +0200
committerMichael Niedermayer <michael@niedermayer.cc>2017-05-17 20:35:19 +0200
commitc78e5a2cb41a8837cd16e99e91eb5455beb1a60e (patch)
treee8687e1897fa7b8f01f19a49c2144b25e228c4d6 /libavcodec
parent903c4b2c3c89686e2640ec6aba7f9b12ab3ee780 (diff)
downloadffmpeg-c78e5a2cb41a8837cd16e99e91eb5455beb1a60e.tar.gz
avcodec/mimic: Fix runtime error: left shift of negative value -1
Fixes: 1365/clusterfuzz-testcase-minimized-5624158450876416 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc> (cherry picked from commit fc2c420b82939a8f30838a6aa08bfd936099d3ce) Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec')
-rw-r--r--libavcodec/mimic.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/mimic.c b/libavcodec/mimic.c
index 06fb393b92..ce649c602a 100644
--- a/libavcodec/mimic.c
+++ b/libavcodec/mimic.c
@@ -262,7 +262,7 @@ static int vlc_decode_block(MimicContext *ctx, int num_coeffs, int qscale)
coeff = vlcdec_lookup[num_bits][value];
if (pos < 3)
- coeff <<= 4;
+ coeff *= 16;
else /* TODO Use >> 10 instead of / 1001 */
coeff = (coeff * qscale) / 1001;