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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-12-07 20:55:16 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-01-30 19:58:15 +0100 |
| commit | a3655bb02c21e70573335e9396632f64b2589536 (patch) | |
| tree | 98c6c979e3067ca9aa7b34210ebe47c6ac9f2c95 /libavcodec/apedec.c | |
| parent | 07754f3f8fdac85f4a73f463b3b68f0214dcabda (diff) | |
avcodec/apedec: Fix undefined integer overflow in decode_array_0000()
Fixes: signed integer overflow: -2143289344 - 6246400 cannot be represented in type 'int'
Fixes: 19239/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_APE_fuzzer-5173755680915456
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec/apedec.c')
| -rw-r--r-- | libavcodec/apedec.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/apedec.c b/libavcodec/apedec.c index 1b23e54153..3e39a8e62e 100644 --- a/libavcodec/apedec.c +++ b/libavcodec/apedec.c @@ -615,7 +615,7 @@ static void decode_array_0000(APEContext *ctx, GetBitContext *gb, return ; } out[i] = get_rice_ook(&ctx->gb, rice->k); - rice->ksum += out[i] - out[i - 64]; + rice->ksum += out[i] - (unsigned)out[i - 64]; while (rice->ksum < ksummin) { rice->k--; ksummin = rice->k ? ksummin >> 1 : 0; |