Message ID | 20191207232012.29634-4-michael@niedermayer.cc |
---|---|
State | Accepted |
Headers | show |
On Sun, Dec 08, 2019 at 12:20:12AM +0100, Michael Niedermayer wrote: > 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> > --- > libavcodec/apedec.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) will apply [...]
diff --git a/libavcodec/apedec.c b/libavcodec/apedec.c index 2b5bd759f5..ebda288043 100644 --- a/libavcodec/apedec.c +++ b/libavcodec/apedec.c @@ -614,7 +614,7 @@ 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;
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> --- libavcodec/apedec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)