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fix(jpeg2000): Watch out for int overflow in buffer size computation #5143

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lgritz merged 2 commits into from
Apr 23, 2026
+11 −1
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fix(jpeg2000): Watch out for int overflow in buffer size computation #5143

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fix(jpeg2000): Watch out for int overflow in buffer size computation
lgritz Apr 12, 2026
4856690
use check_open, and use clamped_mult64 to avoid possible overflow
lgritz Apr 22, 2026
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3 changes: 2 additions & 1 deletion src/jpeg2000.imageio/jpeg2000input.cpp
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Expand Up @@ -392,7 +392,8 @@ Jpeg2000Input::ojph_read_image()
int ch = m_spec.nchannels;
ojph::param_siz siz = codestream.access_siz();

const int bufsize = w * h * ch * buffer_bpp;
const size_t bufsize = size_t(w) * size_t(h) * size_t(ch)
* size_t(buffer_bpp);
m_buf.resize(bufsize);
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codestream.create();

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