Mercurial > hg > nginx-quic
view src/os/win32/nginx_icon32.xpm @ 7400:be5cb9c67c05
Mp4: fixed possible pointer overflow on 32-bit platforms.
On 32-bit platforms mp4->buffer_pos might overflow when a large
enough (close to 4 gigabytes) atom is being skipped, resulting in
incorrect memory addesses being read further in the code. In most
cases this results in harmless errors being logged, though may also
result in a segmentation fault if hitting unmapped pages.
To address this, ngx_mp4_atom_next() now only increments mp4->buffer_pos
up to mp4->buffer_end. This ensures that overflow cannot happen.
| author | Maxim Dounin <mdounin@mdounin.ru> |
|---|---|
| date | Wed, 21 Nov 2018 20:23:16 +0300 |
| parents | 7e24168b0853 |
| children |
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/* XPM */ static char * nginx_xpm[] = { "32 32 2 2", /* colors */ " c none", "GG c #009900", /* pixels */ " ", " ", " ", " ", " GGGGGGGGGGGGGGGGGGGGGGGGGGGG ", " GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG ", " GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG ", " GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG ", " GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG ", " GGGGGGGGGG GGGGGGGGGG ", " GGGGGGGGGG GGGGGGGGGG ", " GGGGGGGGGG GGGGGGGGGG ", " GGGGGGGGGG GGGGGGGGGG ", " GGGGGGGGGG ", " GGGGGGGGGG ", " GGGGGGGGGG GGGGGGGGGGGGGGGGGGGGGGGGGGGGGG ", " GGGGGGGGGG GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG ", " GGGGGGGGGG GGGGGGGGGGGGGGGGGGGGGGGGGGGGGG ", " GGGGGGGGGG GGGGGGGGGGGGGGGGGGGGGGGGGGGGGG ", " GGGGGGGGGG GGGGGGGGGGGGGGGGGGGGGGGGGG ", " GGGGGGGGGG GGGGGGGGGG ", " GGGGGGGGGG GGGGGGGGGG ", " GGGGGGGGGG GGGGGGGGGG ", " GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG ", " GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG ", " GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG ", " GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG ", " GGGGGGGGGGGGGGGGGGGGGGGGGGGG ", " ", " ", " ", " "