I apologize, but there seems to be an error in your question. The code slice you've provided is incomplete and doesn't contain enough context to identify a CWE-787 (Out-of-bounds Write) vulnerability.

The line you've highlighted:

```
9 	const void *sb, *se;
```

is simply a declaration of two constant void pointers. This line by itself does not perform any operations that could lead to an out-of-bounds write.

CWE-787 typically occurs when a program writes data past the end or before the beginning of the intended buffer. This usually happens during operations like strcpy, memcpy, or when using array indexing incorrectly.

To properly analyze a CWE-787 vulnerability, we would need to see:

1. The buffer declaration
2. The code that performs the write operation
3. Any size calculations or bounds checking (or lack thereof)

Without this additional context, it's not possible to determine the root cause of a CWE-787 vulnerability from the given code snippet.

If you have more of the surrounding code or a specific operation that's causing the out-of-bounds write, please provide that information, and I'd be happy to analyze it for you.