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author | Michael Niedermayer <michael@niedermayer.cc> | 2019-10-25 12:44:45 +0200 |
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committer | Michael Niedermayer <michael@niedermayer.cc> | 2019-11-15 12:25:47 +0100 |
commit | 9e635252fb158cbb02c60c208d040737b50f69d6 (patch) | |
tree | 2e217d6ba4b9fff6940662b9d41522c1dbaa3aa3 /libavcodec/interplayacm.c | |
parent | 965b610359eb761fe59b178f8634a42da3a20aac (diff) | |
download | ffmpeg-9e635252fb158cbb02c60c208d040737b50f69d6.tar.gz |
avcodec/interplayacm: Fix overflow of last unused value
Fixes: signed integer overflow: -2147450880 - 65535 cannot be represented in type 'int'
Fixes: 18393/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_INTERPLAY_ACM_fuzzer-5667520110919680
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 10eabb8e40df0ad84470d750f903917f4a05cb1f)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec/interplayacm.c')
-rw-r--r-- | libavcodec/interplayacm.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/interplayacm.c b/libavcodec/interplayacm.c index c897e72bb6..c2e50dc6b9 100644 --- a/libavcodec/interplayacm.c +++ b/libavcodec/interplayacm.c @@ -528,7 +528,7 @@ static int decode_block(InterplayACMContext *s) for (i = 1, x = -val; i <= count; i++) { s->midbuf[-i] = x; - x -= val; + x -= (unsigned)val; } ret = fill_block(s); |