Merge pull request #21348 from wangjiaming0909/fix/3.0/TD-24227

fix: invalid memory access of buffer after vsnprintf

Merge pull request #21348 from wangjiaming0909/fix/3.0/TD-24227
fix: invalid memory access of buffer after vsnprintf
5183e5dd · dapan1121 · GitHub · 67246400 · 77cfab50 · 5183e5dd
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source/util/src/tlog.c source/util/src/tlog.c +1 -0

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--- a/source/util/src/tlog.c
+++ b/source/util/src/tlog.c
@@ -556,6 +556,7 @@ void taosPrintLongString(const char *flags, ELogLevel level, int32_t dflag, cons
  len += vsnprintf(buffer + len, LOG_MAX_LINE_DUMP_BUFFER_SIZE - 2 - len, format, argpointer);
  va_end(argpointer);
+  len = len > LOG_MAX_LINE_DUMP_BUFFER_SIZE - 2 ? LOG_MAX_LINE_DUMP_BUFFER_SIZE - 2 : len;
  buffer[len++] = '\n';
  buffer[len] = 0;