The vulnerability at line 108 isn't a *direct* instance of CWE-190 (integer overflow).  It's more accurate to say it's a potential *consequence* of a missing or inadequate size check related to `firmware_name` earlier in the function, combined with the use of `sizeof(config.fwname)` which makes an assumption about the destination buffer size.  Here's the breakdown:

1. **`firmware_name` is unchecked:** The function receives `firmware_name` as a `const char *`.  There's no validation of its length.  A malicious or buggy caller could provide a very long filename.

2. **Potential buffer overflow at line 88:** At line 87, the code checks if `firmware_name` is provided. If it is, line 88 uses `snprintf` to copy it into `config.fwname`.  However, this `snprintf` only protects against overflowing `config.fwname` (whose size is given by `sizeof(config.fwname)`).  The crucial point is that the source (`firmware_name`) might be much longer. If it is,  the resulting `config.fwname` will be truncated, but no error is explicitly handled.

3. **Cascading effect on line 107:** The truncated `config.fwname` from line 88 is then passed to `qca_generate_hsp_nvm_name` on line 107.  This function likely *appends* to the existing content of `config.fwname`.  Because `sizeof(config.fwname)` is passed again, the assumption is made that the buffer has its full original size available.  However, if `firmware_name` was too long, the buffer has already been partially filled.  `qca_generate_hsp_nvm_name` could then write past the end of `config.fwname`, leading to a buffer overflow.

4. **Indirect CWE-190 possibility:** While not directly an integer overflow, the buffer overflow *could* involve integer manipulation inside `qca_generate_hsp_nvm_name`.  If that function calculates buffer offsets based on the lengths of various components (including the potentially truncated `config.fwname`), an integer overflow in those calculations *could* contribute to the final buffer overflow.  However, this is speculation without seeing the implementation of `qca_generate_hsp_nvm_name`.

**In summary:** The real problem is the lack of input validation for `firmware_name` and the reliance on `sizeof(config.fwname)` after a potential truncation. This creates a condition where a subsequent function might overflow the buffer, potentially exacerbated (but not necessarily caused) by integer issues within that function.  The code needs to check the length of `firmware_name` and handle cases where it's too long *before* copying it into `config.fwname`.
