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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-10-25 12:44:45 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2019-12-31 19:51:56 +0100 |
| commit | f3c4718f1b94c4809349b93713f5ede590538b60 (patch) | |
| tree | 19e3e6ffa0ee2384f3442d70100da0e9671cecc9 | |
| parent | 88d97044cb5ae839b72641ad3205f4cd46b05a9a (diff) | |
| download | ffmpeg-f3c4718f1b94c4809349b93713f5ede590538b60.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>
| -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 5639d8de82..8692a75b5e 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); |