cosine_seek_read(wtap *wth, gint64 seek_off, struct wtap_pkthdr *phdr,
	Buffer *buf, int *err, gchar **err_info)
{
	char	line[COSINE_LINE_LENGTH];

	if (file_seek(wth->random_fh, seek_off, SEEK_SET, err) == -1)
		return FALSE;

	if (file_gets(line, COSINE_LINE_LENGTH, wth->random_fh) == NULL) {
		*err = file_error(wth->random_fh, err_info);
		if (*err == 0) {
			*err = WTAP_ERR_SHORT_READ;
		}
		return FALSE;
	}

	/* Parse the header and convert the ASCII hex dump to binary data */
	return parse_cosine_packet(wth->random_fh, phdr, buf, line, err,
	    err_info);
}

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.