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Verify w and h input multiplication overflow to rleEncode() #1544

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Jun 27, 2024
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Verify w and h input multiplication overflow to rleEncode() #1544

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6 changes: 6 additions & 0 deletions src/datumaro/capi/pybind.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -50,7 +50,12 @@ struct RLE

RLE rleEncode(const byte *M, siz h, siz w)
{

siz j, k, a = w * h;

if (a / w != h)
throw std::runtime_error("result overflow. input size is too big.");

uint c;
byte p;
auto cnts = std::make_unique<std::vector<uint>>(a + 1);
Expand Down Expand Up @@ -82,6 +87,7 @@ py::dict pyRleEncode(py::array_t<std::uint8_t, py::array::f_style | py::array::f

const siz h = buf.shape[0];
const siz w = buf.shape[1];

const auto rle = rleEncode(static_cast<const byte *>(buf.ptr), h, w);

py::array_t<uint> cnts(rle.m);
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