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Fix SIGSEGV/stacksmash in UDP logger.

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The bug was reported in #197. Caused by insufficient size of logging
buffer.
This commit is contained in:
Vadim Vetrov 2024-12-01 18:19:09 +03:00
parent fd1ae1e574
commit aefabe7e0a
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1 changed files with 4 additions and 4 deletions
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8
mangle.c
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@ -338,15 +338,15 @@ int process_udp_packet(const struct section_config_t *section, const uint8_t *pk
goto accept; goto accept;
} }
if (dlen > 10 && config.verbose >= VERBOSE_TRACE) { if (dlen > 10 && config.verbose == VERBOSE_TRACE) {
char buf[50]; char logging_buf[128];
char *bufpt = buf; char *bufpt = logging_buf;
bufpt += sprintf(bufpt, "UDP payload start: [ "); bufpt += sprintf(bufpt, "UDP payload start: [ ");
for (int i = 0; i < 10; i++) { for (int i = 0; i < 10; i++) {
bufpt += sprintf(bufpt, "%02x ", data[i]); bufpt += sprintf(bufpt, "%02x ", data[i]);
} }
bufpt += sprintf(bufpt, "]"); bufpt += sprintf(bufpt, "]");
lgtrace_addp("%s", buf); lgtrace_addp("%s", logging_buf);
} }