idn: fix WinIDN null ptr deref on bad host #11983
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- Return CURLE_URL_MALFORMAT if IDN hostname cannot be converted from UTF-8 to UTF-16. Prior to this change a failed conversion erroneously returned CURLE_OK which meant 'decoded' pointer (what would normally point to the punycode) would not be written to, remain NULL and be dereferenced causing an access violation. Closes #xxxx
bagder
approved these changes
Sep 29, 2023
vszakats
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Sep 29, 2023
MarcelRaad
approved these changes
Sep 30, 2023
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@jay merge? |
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Prior to this change a failed conversion erroneously returned CURLE_OK which meant 'decoded' pointer (what would normally point to the punycode) would not be written to, remain NULL and be dereferenced causing an access violation.
Closes #xxxx