Message ID | 20210927223722.25098-1-michael@niedermayer.cc |
---|---|
State | New |
Headers | show |
Series | [FFmpeg-devel,1/2] avcodec/apedec: Fix undefined integer overflow in long_filter_ehigh_3830() | expand |
Context | Check | Description |
---|---|---|
andriy/make_x86 | success | Make finished |
andriy/make_fate_x86 | success | Make fate finished |
andriy/make_ppc | success | Make finished |
andriy/make_fate_ppc | success | Make fate finished |
On Tue, Sep 28, 2021 at 12:37:21AM +0200, Michael Niedermayer wrote: > 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> > --- > libavcodec/apedec.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) will apply [...]
diff --git a/libavcodec/apedec.c b/libavcodec/apedec.c index 27d0ff35655..014b5615ece 100644 --- a/libavcodec/apedec.c +++ b/libavcodec/apedec.c @@ -979,7 +979,7 @@ 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); } }
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> --- libavcodec/apedec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)