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authorMichael Niedermayer <michael@niedermayer.cc>2021-09-28 00:11:50 +0200
committerMichael Niedermayer <michael@niedermayer.cc>2021-10-17 21:34:53 +0200
commitc295c70c109cc3c5f4100ee73e75705c2b95a272 (patch)
tree67a44cfd585f543b4d07161d54d19b8d55c8d868
parentc641782f7af9a187669d43db5f8543f46d1a35ce (diff)
downloadffmpeg-c295c70c109cc3c5f4100ee73e75705c2b95a272.tar.gz
avcodec/apedec: Fix undefined integer overflow in long_filter_ehigh_3830()
Fixes: signed integer overflow: -2145648640 - 3357696 cannot be represented in type 'int' Fixes: 38899/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_APE_fuzzer-5358815017566208 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 ad517ee6e44f093e28021ffd51c7eb2e1394b1a9) Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
-rw-r--r--libavcodec/apedec.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/apedec.c b/libavcodec/apedec.c
index 7192883fc4..37ef4e2827 100644
--- a/libavcodec/apedec.c
+++ b/libavcodec/apedec.c
@@ -929,7 +929,7 @@ static void long_filter_ehigh_3830(int32_t *buffer, int length)
for (j = 7; j > 0; j--)
delay[j] = delay[j - 1];
delay[0] = buffer[i];
- buffer[i] -= dotprod >> 9;
+ buffer[i] -= (unsigned)(dotprod >> 9);
}
}