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fix(core): ensure proper handling of vendor string

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cepetr 2024-10-02 13:07:49 +02:00 committed by cepetr
parent a44c660ccc
commit f54edd0d6a
1 changed files with 4 additions and 2 deletions
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6
core/embed/trezorhal/stm32f4/fwutils.c
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@ -83,15 +83,17 @@ secbool firmware_get_vendor(char* buff, size_t buff_size) {
vendor_header vhdr = {0}; vendor_header vhdr = {0};
memset(buff, 0, buff_size);
if (data == NULL || sectrue != read_vendor_header(data, &vhdr)) { if (data == NULL || sectrue != read_vendor_header(data, &vhdr)) {
return secfalse; return secfalse;
} }
if (buff == NULL || buff_size < vhdr.vstr_len + 1) { if (buff_size < vhdr.vstr_len + 1) {
return secfalse; return secfalse;
} }
strncpy(buff, vhdr.vstr, buff_size); memcpy(buff, vhdr.vstr, vhdr.vstr_len);
return sectrue; return sectrue;
} }